diff --git a/.esdoc.json b/.esdoc.json
new file mode 100644
index 00000000..90752511
--- /dev/null
+++ b/.esdoc.json
@@ -0,0 +1,10 @@
+{
+  "source": "./src",
+  "destination": "./docs",
+  "plugins": [{
+    "name": "esdoc-standard-plugin",
+    "option": {
+      "accessor": {"access": ["public"], "autoPrivate": true}
+    }
+  }]
+}
diff --git a/.gitignore b/.gitignore
index 1173b99b..d784cd40 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 node_modules
 bower_components
+docs
 /y.*
 /examples/yjs-dist.js*
diff --git a/documentation.yml b/documentation.yml
new file mode 100644
index 00000000..925badf2
--- /dev/null
+++ b/documentation.yml
@@ -0,0 +1,43 @@
+toc:
+  - Y
+  - name: Shared Types
+    description: |
+      Types provide an abstraction over the shared data.
+      Shared types can be edited concurrently by peers.
+  - Type
+  - YArray
+  - YMap
+  - YText
+  - YXmlElement
+  - YXmlFragment
+  - YXmlHook
+  - YXmlText
+  - name: Bindings
+    description: |
+      A binding handles data binding from a Yjs type to
+      a data object
+  - Binding
+  - DomBinding
+  - QuillBinding
+  - TextareaBinding
+  - name: Events
+    description: |
+      Events describe changes on shared types.
+  - YArrayEvent
+  - YEvent
+  - YMapEvent
+  - YTextEvent
+  - YXmlEvent
+  - name: Binary Encoding
+    description: |
+      Yjs efficiently encodes the Yjs model to a binary format.
+      This section describes utility functions for binary encoding and decoding.
+  - BinaryEncoder
+  - BinaryDecoder
+  - toBinary
+  - fromBinary
+  - name: Relative Position
+  - RelativePosition
+  - fromRelativePosition
+  - getRelativePosition
+  - name: Utility
diff --git a/package-lock.json b/package-lock.json
index c8facecd..cdd94b4b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,12 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "abab": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
+      "integrity": "sha1-X6rZwsB/YN12dw9xzwJbYqY8/U4=",
+      "optional": true
+    },
     "accepts": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
@@ -20,6 +26,23 @@
       "integrity": "sha1-EFSVrlNh1pe9GVyCUZLhrX8lN4c=",
       "dev": true
     },
+    "acorn-globals": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/acorn-globals/-/acorn-globals-1.0.9.tgz",
+      "integrity": "sha1-VbtemGkVB7dFedBRNBMhfDgMVM8=",
+      "optional": true,
+      "requires": {
+        "acorn": "2.7.0"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "2.7.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
+          "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
+          "optional": true
+        }
+      }
+    },
     "acorn-jsx": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
@@ -73,14 +96,12 @@
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       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-      "dev": true
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
     },
     "ansi-styles": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-      "dev": true
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
     },
     "anymatch": {
       "version": "1.3.0",
@@ -180,6 +201,17 @@
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
       "dev": true
     },
+    "asn1": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.3.tgz",
+      "integrity": "sha1-2sh4dxPJlmhJ/IGAd36+nB3fO4Y=",
+      "optional": true
+    },
+    "assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
+    },
     "async-array-reduce": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/async-array-reduce/-/async-array-reduce-0.2.1.tgz",
@@ -192,6 +224,24 @@
       "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
       "dev": true
     },
+    "asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
+      "optional": true
+    },
+    "aws-sign2": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
+      "optional": true
+    },
+    "aws4": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.6.0.tgz",
+      "integrity": "sha1-g+9cqGCysy5KDe7e6MdxudtXRx4=",
+      "optional": true
+    },
     "babel-cli": {
       "version": "6.24.1",
       "resolved": "https://registry.npmjs.org/babel-cli/-/babel-cli-6.24.1.tgz",
@@ -410,7 +460,6 @@
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       "resolved": "https://registry.npmjs.org/babel-messages/-/babel-messages-6.23.0.tgz",
       "integrity": "sha1-8830cDhYA1sqKVHG7F7fbGLyYw4=",
-      "dev": true,
       "requires": {
         "babel-runtime": "6.23.0"
       }
@@ -827,7 +876,6 @@
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       "resolved": "https://registry.npmjs.org/babel-runtime/-/babel-runtime-6.23.0.tgz",
       "integrity": "sha1-CpSJ8UTecO+zzkMArM2zKeL8VDs=",
-      "dev": true,
       "requires": {
         "core-js": "2.4.1",
         "regenerator-runtime": "0.10.5"
@@ -867,7 +915,6 @@
       "version": "6.25.0",
       "resolved": "https://registry.npmjs.org/babel-types/-/babel-types-6.25.0.tgz",
       "integrity": "sha1-cK+ySNVmDl0Y+BHZHIMDtUE0oY4=",
-      "dev": true,
       "requires": {
         "babel-runtime": "6.23.0",
         "esutils": "2.0.2",
@@ -899,6 +946,15 @@
       "integrity": "sha1-3DQxT05nkxgJP8dgJyUl+UvyXBY=",
       "dev": true
     },
+    "bcrypt-pbkdf": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.1.tgz",
+      "integrity": "sha1-Y7xdy2EzG5K8Bf1SiVPDNGKgb40=",
+      "optional": true,
+      "requires": {
+        "tweetnacl": "0.14.5"
+      }
+    },
     "bcryptjs": {
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/bcryptjs/-/bcryptjs-2.4.3.tgz",
@@ -911,6 +967,20 @@
       "integrity": "sha1-SOyNFt9Dd+rl+liEaCSAr02Vx3Q=",
       "dev": true
     },
+    "boolbase": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
+      "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24="
+    },
+    "boom": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/boom/-/boom-4.3.1.tgz",
+      "integrity": "sha1-T4owBctKfjiJ90kDD9JbluAdLjE=",
+      "optional": true,
+      "requires": {
+        "hoek": "4.2.1"
+      }
+    },
     "brace-expansion": {
       "version": "1.1.8",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
@@ -994,6 +1064,12 @@
         }
       }
     },
+    "caseless": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
+      "optional": true
+    },
     "center-align": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/center-align/-/center-align-0.1.3.tgz",
@@ -1016,7 +1092,6 @@
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-      "dev": true,
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         "ansi-styles": "2.2.1",
         "escape-string-regexp": "1.0.5",
@@ -1031,6 +1106,29 @@
       "integrity": "sha1-A1ALBK2U53jdKJGwnsc6ath7GZY=",
       "dev": true
     },
+    "cheerio": {
+      "version": "0.22.0",
+      "resolved": "https://registry.npmjs.org/cheerio/-/cheerio-0.22.0.tgz",
+      "integrity": "sha1-qbqoYKP5tZWmuBsahocxIe06Jp4=",
+      "requires": {
+        "css-select": "1.2.0",
+        "dom-serializer": "0.1.0",
+        "entities": "1.1.1",
+        "htmlparser2": "3.9.2",
+        "lodash.assignin": "4.2.0",
+        "lodash.bind": "4.2.1",
+        "lodash.defaults": "4.2.0",
+        "lodash.filter": "4.6.0",
+        "lodash.flatten": "4.4.0",
+        "lodash.foreach": "4.5.0",
+        "lodash.map": "4.6.0",
+        "lodash.merge": "4.6.1",
+        "lodash.pick": "4.4.0",
+        "lodash.reduce": "4.6.0",
+        "lodash.reject": "4.6.0",
+        "lodash.some": "4.6.0"
+      }
+    },
     "chokidar": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-1.7.0.tgz",
@@ -1088,8 +1186,7 @@
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
-      "dev": true
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
     },
     "code-point-at": {
       "version": "1.1.0",
@@ -1097,6 +1194,19 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
       "dev": true
     },
+    "color-logger": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/color-logger/-/color-logger-0.0.3.tgz",
+      "integrity": "sha1-2bIt0dlz4Waxi/MT+fSBu6TfIBg="
+    },
+    "combined-stream": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+      "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
+      "requires": {
+        "delayed-stream": "1.0.0"
+      }
+    },
     "commander": {
       "version": "2.10.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.10.0.tgz",
@@ -1251,14 +1361,62 @@
     "core-js": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-2.4.1.tgz",
-      "integrity": "sha1-TekR5mew6ukSTjQlS1OupvxhjT4=",
-      "dev": true
+      "integrity": "sha1-TekR5mew6ukSTjQlS1OupvxhjT4="
     },
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
-      "dev": true
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
+    },
+    "cryptiles": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-3.1.2.tgz",
+      "integrity": "sha1-qJ+7Ig9c4l7FboxKqKT9e1sNKf4=",
+      "optional": true,
+      "requires": {
+        "boom": "5.2.0"
+      },
+      "dependencies": {
+        "boom": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/boom/-/boom-5.2.0.tgz",
+          "integrity": "sha512-Z5BTk6ZRe4tXXQlkqftmsAUANpXmuwlsF5Oov8ThoMbQRzdGTA1ngYRW160GexgOgjsFOKJz0LYhoNi+2AMBUw==",
+          "optional": true,
+          "requires": {
+            "hoek": "4.2.1"
+          }
+        }
+      }
+    },
+    "css-select": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
+      "integrity": "sha1-KzoRBTnFNV8c2NMUYj6HCxIeyFg=",
+      "requires": {
+        "boolbase": "1.0.0",
+        "css-what": "2.1.0",
+        "domutils": "1.5.1",
+        "nth-check": "1.0.1"
+      }
+    },
+    "css-what": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/css-what/-/css-what-2.1.0.tgz",
+      "integrity": "sha1-lGfQMsOM+u+58teVASUwYvh/ob0="
+    },
+    "cssom": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.2.tgz",
+      "integrity": "sha1-uANhcMefB6kP8vFuIihAJ6JDhIs="
+    },
+    "cssstyle": {
+      "version": "0.2.37",
+      "resolved": "https://registry.npmjs.org/cssstyle/-/cssstyle-0.2.37.tgz",
+      "integrity": "sha1-VBCXI0yyUTyDzu06zdwn/yeYfVQ=",
+      "optional": true,
+      "requires": {
+        "cssom": "0.3.2"
+      }
     },
     "currently-unhandled": {
       "version": "0.4.1",
@@ -1289,6 +1447,15 @@
         "es5-ext": "0.10.23"
       }
     },
+    "dashdash": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
+      "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
+      "optional": true,
+      "requires": {
+        "assert-plus": "1.0.0"
+      }
+    },
     "date-fns": {
       "version": "1.28.5",
       "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-1.28.5.tgz",
@@ -1324,8 +1491,7 @@
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       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
-      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
-      "dev": true
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ="
     },
     "define-properties": {
       "version": "1.1.2",
@@ -1366,6 +1532,11 @@
         "rimraf": "2.6.1"
       }
     },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+    },
     "depd": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.0.tgz",
@@ -1382,7 +1553,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/detect-indent/-/detect-indent-4.0.0.tgz",
       "integrity": "sha1-920GQ1LN9Docts5hnE7jqUdd4gg=",
-      "dev": true,
       "requires": {
         "repeating": "2.0.1"
       }
@@ -1397,12 +1567,59 @@
         "isarray": "1.0.0"
       }
     },
+    "dom-serializer": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-0.1.0.tgz",
+      "integrity": "sha1-BzxpdUbOB4DOI75KKOKT5AvDDII=",
+      "requires": {
+        "domelementtype": "1.1.3",
+        "entities": "1.1.1"
+      },
+      "dependencies": {
+        "domelementtype": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs="
+        }
+      }
+    },
+    "domelementtype": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.3.0.tgz",
+      "integrity": "sha1-sXrtguirWeUt2cGbF1bg/BhyBMI="
+    },
+    "domhandler": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-2.4.1.tgz",
+      "integrity": "sha1-iS5HAAqZvlW783dP/qBWHYh5wlk=",
+      "requires": {
+        "domelementtype": "1.3.0"
+      }
+    },
+    "domutils": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-1.5.1.tgz",
+      "integrity": "sha1-3NhIiib1Y9YQeeSMn3t+Mjc2gs8=",
+      "requires": {
+        "dom-serializer": "0.1.0",
+        "domelementtype": "1.3.0"
+      }
+    },
     "duplexer": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },
+    "ecc-jsbn": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.1.tgz",
+      "integrity": "sha1-D8c6ntXw1Tw4GTOYUj735UN3dQU=",
+      "optional": true,
+      "requires": {
+        "jsbn": "0.1.1"
+      }
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -1415,6 +1632,11 @@
       "integrity": "sha1-eePVhlU0aQn+bw9Fpd5oEDspTSA=",
       "dev": true
     },
+    "entities": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.1.tgz",
+      "integrity": "sha1-blwtClYhtdra7O+AuQ7ftc13cvA="
+    },
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       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/error-ex/-/error-ex-1.3.1.tgz",
@@ -1529,14 +1751,33 @@
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       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
-      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg=",
-      "dev": true
+      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
     },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
-      "dev": true
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
+    },
+    "escodegen": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.9.1.tgz",
+      "integrity": "sha512-6hTjO1NAWkHnDk3OqQ4YrCuwwmGHL9S3nPlzBOUG/R44rda3wLNrfvQ5fkSGjyhHFKM7ALPKcKGrwvCLe0lC7Q==",
+      "optional": true,
+      "requires": {
+        "esprima": "3.1.3",
+        "estraverse": "4.2.0",
+        "esutils": "2.0.2",
+        "optionator": "0.8.2",
+        "source-map": "0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
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@@ -3216,6 +4044,12 @@
         "through": "2.3.8"
       }
     },
+    "performance-now": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
+      "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=",
+      "optional": true
+    },
     "pify": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
@@ -3296,8 +4130,7 @@
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
-      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-      "dev": true
+      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
     },
     "preserve": {
       "version": "0.2.0",
@@ -3314,8 +4147,7 @@
     "process-nextick-args": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
-      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M=",
-      "dev": true
+      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
     },
     "progress": {
       "version": "1.1.8",
@@ -3323,6 +4155,17 @@
       "integrity": "sha1-4mDHj2Fhzdmw5WzD4Khd4Xx6V74=",
       "dev": true
     },
+    "punycode": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
+      "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
+    },
+    "qs": {
+      "version": "6.5.1",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.1.tgz",
+      "integrity": "sha512-eRzhrN1WSINYCDCbrz796z37LOe3m5tmW7RQf6oBntukAG1nmovJvhnwHHRMAfeoItc1m2Hk02WER2aQ/iqs+A==",
+      "optional": true
+    },
     "quill": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/quill/-/quill-1.3.5.tgz",
@@ -3460,7 +4303,6 @@
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.3.tgz",
       "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
-      "dev": true,
       "requires": {
         "core-util-is": "1.0.2",
         "inherits": "2.0.3",
@@ -3522,8 +4364,7 @@
     "regenerator-runtime": {
       "version": "0.10.5",
       "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.10.5.tgz",
-      "integrity": "sha1-M2w+/BIgrc7dosn6tntaeVWjNlg=",
-      "dev": true
+      "integrity": "sha1-M2w+/BIgrc7dosn6tntaeVWjNlg="
     },
     "regenerator-transform": {
       "version": "0.9.11",
@@ -3602,11 +4443,57 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/repeating/-/repeating-2.0.1.tgz",
       "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
-      "dev": true,
       "requires": {
         "is-finite": "1.0.2"
       }
     },
+    "request": {
+      "version": "2.83.0",
+      "resolved": "https://registry.npmjs.org/request/-/request-2.83.0.tgz",
+      "integrity": "sha512-lR3gD69osqm6EYLk9wB/G1W/laGWjzH90t1vEa2xuxHD5KUrSzp9pUSfTm+YC5Nxt2T8nMPEvKlhbQayU7bgFw==",
+      "optional": true,
+      "requires": {
+        "aws-sign2": "0.7.0",
+        "aws4": "1.6.0",
+        "caseless": "0.12.0",
+        "combined-stream": "1.0.6",
+        "extend": "3.0.1",
+        "forever-agent": "0.6.1",
+        "form-data": "2.3.2",
+        "har-validator": "5.0.3",
+        "hawk": "6.0.2",
+        "http-signature": "1.2.0",
+        "is-typedarray": "1.0.0",
+        "isstream": "0.1.2",
+        "json-stringify-safe": "5.0.1",
+        "mime-types": "2.1.18",
+        "oauth-sign": "0.8.2",
+        "performance-now": "2.1.0",
+        "qs": "6.5.1",
+        "safe-buffer": "5.1.1",
+        "stringstream": "0.0.5",
+        "tough-cookie": "2.3.4",
+        "tunnel-agent": "0.6.0",
+        "uuid": "3.1.0"
+      },
+      "dependencies": {
+        "mime-db": {
+          "version": "1.33.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.33.0.tgz",
+          "integrity": "sha512-BHJ/EKruNIqJf/QahvxwQZXKygOQ256myeN/Ew+THcAa5q+PjyTTMMeNQC4DZw5AwfvelsUrA6B67NKMqXDbzQ==",
+          "optional": true
+        },
+        "mime-types": {
+          "version": "2.1.18",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.18.tgz",
+          "integrity": "sha512-lc/aahn+t4/SWV/qcmumYjymLsWfN3ELhpmVuUFjgsORruuZPVSwAQryq+HHGvO/SI2KVX26bx+En+zhM8g8hQ==",
+          "optional": true,
+          "requires": {
+            "mime-db": "1.33.0"
+          }
+        }
+      }
+    },
     "require-relative": {
       "version": "0.8.7",
       "resolved": "https://registry.npmjs.org/require-relative/-/require-relative-0.8.7.tgz",
@@ -3830,8 +4717,13 @@
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-      "dev": true
+      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
+    },
+    "sax": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
+      "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
+      "optional": true
     },
     "semver": {
       "version": "5.3.0",
@@ -3904,11 +4796,19 @@
       "integrity": "sha1-7b+JA/ZvfOL46v1s7tZeJkyDGzU=",
       "dev": true
     },
+    "sntp": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/sntp/-/sntp-2.1.0.tgz",
+      "integrity": "sha512-FL1b58BDrqS3A11lJ0zEdnJ3UOKqVxawAkF3k7F0CVN7VQ34aZrV+G8BZ1WC9ZL7NyrwsW0oviwsWDgRuVYtJg==",
+      "optional": true,
+      "requires": {
+        "hoek": "4.2.1"
+      }
+    },
     "source-map": {
       "version": "0.5.6",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
-      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI=",
-      "dev": true
+      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI="
     },
     "source-map-support": {
       "version": "0.4.15",
@@ -3961,6 +4861,22 @@
       "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
       "dev": true
     },
+    "sshpk": {
+      "version": "1.13.1",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.13.1.tgz",
+      "integrity": "sha1-US322mKHFEMW3EwY/hzx2UBzm+M=",
+      "optional": true,
+      "requires": {
+        "asn1": "0.2.3",
+        "assert-plus": "1.0.0",
+        "bcrypt-pbkdf": "1.0.1",
+        "dashdash": "1.14.1",
+        "ecc-jsbn": "0.1.1",
+        "getpass": "0.1.7",
+        "jsbn": "0.1.1",
+        "tweetnacl": "0.14.5"
+      }
+    },
     "stack-generator": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/stack-generator/-/stack-generator-2.0.1.tgz",
@@ -4049,15 +4965,6 @@
         "duplexer": "0.1.1"
       }
     },
-    "string_decoder": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
-      "dev": true,
-      "requires": {
-        "safe-buffer": "5.1.1"
-      }
-    },
     "string-width": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@@ -4069,11 +4976,24 @@
         "strip-ansi": "3.0.1"
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
+    "stringstream": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
+      "integrity": "sha1-TkhM1N5aC7vuGORjB3EKioFiGHg=",
+      "optional": true
+    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-      "dev": true,
       "requires": {
         "ansi-regex": "2.1.1"
       }
@@ -4110,8 +5030,13 @@
     "supports-color": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
-      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
-      "dev": true
+      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
+    },
+    "symbol-tree": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.2.tgz",
+      "integrity": "sha1-rifbOPZgp64uHDt9G8KQgZuFGeY=",
+      "optional": true
     },
     "table": {
       "version": "3.8.3",
@@ -4160,6 +5085,11 @@
         }
       }
     },
+    "taffydb": {
+      "version": "2.7.2",
+      "resolved": "https://registry.npmjs.org/taffydb/-/taffydb-2.7.2.tgz",
+      "integrity": "sha1-e/gQalwaSCUbPjvAoOFzJIn9Dcg="
+    },
     "tag-dist-files": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/tag-dist-files/-/tag-dist-files-0.1.6.tgz",
@@ -4193,8 +5123,7 @@
     "to-fast-properties": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/to-fast-properties/-/to-fast-properties-1.0.3.tgz",
-      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc=",
-      "dev": true
+      "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc="
     },
     "to-object-path": {
       "version": "0.3.0",
@@ -4205,6 +5134,20 @@
         "kind-of": "3.2.2"
       }
     },
+    "tough-cookie": {
+      "version": "2.3.4",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
+      "integrity": "sha512-TZ6TTfI5NtZnuyy/Kecv+CnoROnyXn2DN97LontgQpCwsX2XyLYCC0ENhYkehSOwAp8rTQKc/NUIF7BkQ5rKLA==",
+      "requires": {
+        "punycode": "1.4.1"
+      }
+    },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=",
+      "optional": true
+    },
     "tree-kill": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.1.0.tgz",
@@ -4220,8 +5163,7 @@
     "trim-right": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",
-      "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM=",
-      "dev": true
+      "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM="
     },
     "tryit": {
       "version": "1.0.3",
@@ -4229,11 +5171,25 @@
       "integrity": "sha1-OTvnMKlEb9Hq1tpZoBQwjzbCics=",
       "dev": true
     },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "optional": true,
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=",
+      "optional": true
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
-      "dev": true,
       "requires": {
         "prelude-ls": "1.1.2"
       }
@@ -4289,8 +5245,7 @@
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "utils-merge": {
       "version": "1.0.0",
@@ -4301,8 +5256,7 @@
     "uuid": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.1.0.tgz",
-      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g==",
-      "dev": true
+      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g=="
     },
     "v8flags": {
       "version": "2.1.1",
@@ -4329,12 +5283,29 @@
       "integrity": "sha1-Z1Neu2lMHVIldFeYRmUyP1h+jTc=",
       "dev": true
     },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "optional": true,
+      "requires": {
+        "assert-plus": "1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "1.3.0"
+      }
+    },
     "vlq": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/vlq/-/vlq-0.2.2.tgz",
       "integrity": "sha1-4xbVJXtAuGu0PLjV/qXX9U1rDKE=",
       "dev": true
     },
+    "webidl-conversions": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-2.0.1.tgz",
+      "integrity": "sha1-O/glj30xjHRDw28uFpQCoaZwNQY=",
+      "optional": true
+    },
     "websocket-driver": {
       "version": "0.6.5",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.6.5.tgz",
@@ -4350,6 +5321,15 @@
       "integrity": "sha1-domUmcGEtu91Q3fC27DNbLVdKec=",
       "dev": true
     },
+    "whatwg-url-compat": {
+      "version": "0.6.5",
+      "resolved": "https://registry.npmjs.org/whatwg-url-compat/-/whatwg-url-compat-0.6.5.tgz",
+      "integrity": "sha1-AImBEa9om7CXVBzVpFymyHmERb8=",
+      "optional": true,
+      "requires": {
+        "tr46": "0.0.3"
+      }
+    },
     "which": {
       "version": "1.2.14",
       "resolved": "https://registry.npmjs.org/which/-/which-1.2.14.tgz",
@@ -4386,6 +5366,12 @@
         "mkdirp": "0.5.1"
       }
     },
+    "xml-name-validator": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-2.0.1.tgz",
+      "integrity": "sha1-TYuPHszTQZqjYgYb7O9RXh5VljU=",
+      "optional": true
+    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
diff --git a/package.json b/package.json
index b53df6ef..a936fb9d 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
   "scripts": {
     "test": "npm run lint",
     "debug": "concurrently 'rollup -wc rollup.test.js' 'cutest-serve y.test.js -o'",
-    "lint": "standard",
+    "lint": "standard && documentation lint src/**",
+    "docs": "documentation build src/** -f html -o docs",
+    "serve-docs": "documentation serve src/**",
     "dist": "rollup -c rollup.browser.js; rollup -c rollup.node.js",
     "watch": "concurrently 'rollup -wc rollup.browser.js' 'rollup -wc rollup.node.js'",
     "postversion": "npm run dist",
@@ -64,7 +66,9 @@
     "rollup-regenerator-runtime": "^6.23.1",
     "rollup-watch": "^3.2.2",
     "standard": "^10.0.2",
-    "tag-dist-files": "^0.1.6"
+    "tag-dist-files": "^0.1.6",
+    "esdoc": "^1.0.4",
+    "esdoc-standard-plugin": "^1.0.0"
   },
   "dependencies": {
     "debug": "^2.6.8"
diff --git a/src/Binary/Decoder.js b/src/Binary/Decoder.js
index fcc18b72..d872e037 100644
--- a/src/Binary/Decoder.js
+++ b/src/Binary/Decoder.js
@@ -1,7 +1,13 @@
 import ID from '../Util/ID.js'
 import { default as RootID, RootFakeUserID } from '../Util/RootID.js'
 
+/**
+ * A BinaryDecoder handles the decoding of an ArrayBuffer
+ */
 export default class BinaryDecoder {
+  /**
+   * @param {Uint8Array|Buffer} buffer The binary data that this instance decodes
+   */
   constructor (buffer) {
     if (buffer instanceof ArrayBuffer) {
       this.uint8arr = new Uint8Array(buffer)
@@ -12,6 +18,7 @@ export default class BinaryDecoder {
     }
     this.pos = 0
   }
+
   /**
    * Clone this decoder instance
    * Optionally set a new position parameter
@@ -21,26 +28,32 @@ export default class BinaryDecoder {
     decoder.pos = newPos
     return decoder
   }
+
   /**
    * Number of bytes
    */
   get length () {
     return this.uint8arr.length
   }
+
   /**
    * Skip one byte, jump to the next position
    */
   skip8 () {
     this.pos++
   }
+
   /**
    * Read one byte as unsigned integer
    */
   readUint8 () {
     return this.uint8arr[this.pos++]
   }
+
   /**
    * Read 4 bytes as unsigned integer
+   *
+   * @return number An unsigned integer
    */
   readUint32 () {
     let uint =
@@ -51,19 +64,24 @@ export default class BinaryDecoder {
     this.pos += 4
     return uint
   }
+
   /**
    * Look ahead without incrementing position
    * to the next byte and read it as unsigned integer
+   *
+   * @return number An unsigned integer
    */
   peekUint8 () {
     return this.uint8arr[this.pos]
   }
+
   /**
    * Read unsigned integer (32bit) with variable length
    * 1/8th of the storage is used as encoding overhead
-   *  - numbers < 2^7 is stored in one byte
-   *  - numbers < 2^14 is stored in two bytes
-   *  ..
+   *  * numbers < 2^7 is stored in one byte
+   *  * numbers < 2^14 is stored in two bytes
+   *
+   * @return number An unsigned integer
    */
   readVarUint () {
     let num = 0
@@ -80,9 +98,12 @@ export default class BinaryDecoder {
       }
     }
   }
+
   /**
    * Read string of variable length
-   * - varUint is used to store the length of the string
+   * * varUint is used to store the length of the string
+   *
+   * @return string
    */
   readVarString () {
     let len = this.readVarUint()
@@ -94,7 +115,7 @@ export default class BinaryDecoder {
     return decodeURIComponent(escape(encodedString))
   }
   /**
-   *  Look ahead and read varString without incrementing position
+   * Look ahead and read varString without incrementing position
    */
   peekVarString () {
     let pos = this.pos
@@ -104,8 +125,10 @@ export default class BinaryDecoder {
   }
   /**
    * Read ID
-   * - If first varUint read is 0xFFFFFF a RootID is returned
-   * - Otherwise an ID is returned
+   * * If first varUint read is 0xFFFFFF a RootID is returned
+   * * Otherwise an ID is returned
+   *
+   * @return ID
    */
   readID () {
     let user = this.readVarUint()
diff --git a/src/Binary/Encoder.js b/src/Binary/Encoder.js
index db53e8df..b31cb67d 100644
--- a/src/Binary/Encoder.js
+++ b/src/Binary/Encoder.js
@@ -3,41 +3,81 @@ import { RootFakeUserID } from '../Util/RootID.js'
 const bits7 = 0b1111111
 const bits8 = 0b11111111
 
+/**
+ * A BinaryEncoder handles the encoding to an ArrayBuffer
+ */
 export default class BinaryEncoder {
   constructor () {
     // TODO: implement chained Uint8Array buffers instead of Array buffer
     this.data = []
   }
 
+  /**
+   * The current length of the encoded data
+   */
   get length () {
     return this.data.length
   }
 
+  /**
+   * The current write pointer (the same as {@link length}).
+   */
   get pos () {
     return this.data.length
   }
 
+  /**
+   * Create an ArrayBuffer
+   *
+   * @return {Uint8Array}
+   */
   createBuffer () {
     return Uint8Array.from(this.data).buffer
   }
 
+  /**
+   * Write one byte as an unsigned integer
+   *
+   * @param {number} num The number that is to be encoded
+   */
   writeUint8 (num) {
     this.data.push(num & bits8)
   }
 
+  /**
+   * Write one byte as an unsigned Integer at a specific location
+   *
+   * @param {number} pos The location where the data will be written
+   * @param {number} num The number that is to
+   */
   setUint8 (pos, num) {
     this.data[pos] = num & bits8
   }
 
+  /**
+   * Write two bytes as an unsigned integer
+   *
+   * @param {number} pos The number that is to be encoded
+   */
   writeUint16 (num) {
     this.data.push(num & bits8, (num >>> 8) & bits8)
   }
-
+  /**
+   * Write two bytes as an unsigned integer at a specific location
+   *
+   * @param {number} pos The location where the data will be written
+   * @param {number} num The number that is to
+   */
   setUint16 (pos, num) {
     this.data[pos] = num & bits8
     this.data[pos + 1] = (num >>> 8) & bits8
   }
 
+  /**
+   * Write two bytes as an unsigned integer
+   *
+   * @param {number} pos The number that is to be encoded
+   */
   writeUint32 (num) {
     for (let i = 0; i < 4; i++) {
       this.data.push(num & bits8)
@@ -45,6 +85,12 @@ export default class BinaryEncoder {
     }
   }
 
+  /**
+   * Write two bytes as an unsigned integer at a specific location
+   *
+   * @param {number} pos The location where the data will be written
+   * @param {number} num The number that is to
+   */
   setUint32 (pos, num) {
     for (let i = 0; i < 4; i++) {
       this.data[pos + i] = num & bits8
@@ -52,6 +98,11 @@ export default class BinaryEncoder {
     }
   }
 
+  /**
+   * Write a variable length unsigned integer
+   *
+   * @param {number} pos The number that is to be encoded
+   */
   writeVarUint (num) {
     while (num >= 0b10000000) {
       this.data.push(0b10000000 | (bits7 & num))
@@ -60,6 +111,11 @@ export default class BinaryEncoder {
     this.data.push(bits7 & num)
   }
 
+  /**
+   * Write a variable length string.
+   *
+   * @param {number} pos The number that is to be encoded
+   */
   writeVarString (str) {
     let encodedString = unescape(encodeURIComponent(str))
     let bytes = encodedString.split('').map(c => c.codePointAt())
@@ -70,6 +126,11 @@ export default class BinaryEncoder {
     }
   }
 
+  /**
+   * Write an ID at the current position
+   *
+   * @param {ID} id
+   */
   writeID (id) {
     const user = id.user
     this.writeVarUint(user)
diff --git a/src/Binding/Binding.js b/src/Binding/Binding.js
index a8998410..8ccab2c2 100644
--- a/src/Binding/Binding.js
+++ b/src/Binding/Binding.js
@@ -1,12 +1,34 @@
 
 import { createMutualExclude } from '../Util/mutualExclude.js'
 
+/**
+ * Abstract class for bindings
+ *
+ * A binding handles data binding from a Yjs type to a data object. For example,
+ * you can bind a Quill editor instance to a YText instance with the `QuillBinding` class.
+ *
+ * It is expected that a concrete implementation accepts two parameters
+ * (type and binding target).
+ *
+ * @example
+ *   const quill = new Quill(document.createElement('div'))
+ *   const type = y.define('quill', Y.Text)
+ *   const binding = new Y.QuillBinding(quill, type)
+ *
+ */
 export default class Binding {
+  /**
+   * @param {YType} type Yjs type
+   * @param {any} target Binding Target
+   */
   constructor (type, target) {
     this.type = type
     this.target = target
     this._mutualExclude = createMutualExclude()
   }
+  /**
+   * Remove all data observers (both from the type and th target).
+   */
   destroy () {
     this.type = null
     this.target = null
diff --git a/src/Binding/QuillBinding.js b/src/Binding/QuillBinding.js
index 74bb21bc..e88a6c44 100644
--- a/src/Binding/QuillBinding.js
+++ b/src/Binding/QuillBinding.js
@@ -1,4 +1,3 @@
-
 import Binding from './Binding.js'
 
 function typeObserver (event) {
@@ -16,17 +15,29 @@ function quillObserver (delta) {
   })
 }
 
+/**
+ * A Binding that binds a YText type to a Quill editor
+ *
+ * @example
+ *   const quill = new Quill(document.createElement('div'))
+ *   const type = y.define('quill', Y.Text)
+ *   const binding = new Y.QuillBinding(quill, type)
+ */
 export default class QuillBinding extends Binding {
-  constructor (textType, quillInstance) {
-    // Binding handles textType as this.type and quillInstance as this.target
-    super(textType, quillInstance)
+  /**
+   * @param {YText} textType
+   * @param {Quill} quill
+   */
+  constructor (textType, quill) {
+    // Binding handles textType as this.type and quill as this.target
+    super(textType, quill)
     // set initial value
-    quillInstance.setContents(textType.toDelta(), 'yjs')
+    quill.setContents(textType.toDelta(), 'yjs')
     // Observers are handled by this class
     this._typeObserver = typeObserver.bind(this)
     this._quillObserver = quillObserver.bind(this)
     textType.observe(this._typeObserver)
-    quillInstance.on('text-change', this._quillObserver)
+    quill.on('text-change', this._quillObserver)
   }
   destroy () {
     // Remove everything that is handled by this class
diff --git a/src/Binding/TextareaBinding.js b/src/Binding/TextareaBinding.js
index ab59f0f7..829bfe9d 100644
--- a/src/Binding/TextareaBinding.js
+++ b/src/Binding/TextareaBinding.js
@@ -24,6 +24,17 @@ function domObserver () {
   })
 }
 
+/**
+ * A binding that binds a YText to a dom textarea.
+ *
+ * This binding will automatically be destroyed when it's parent is deleted
+ *
+ * @example
+ *   const textare = document.createElement('textarea')
+ *   const type = y.define('textarea', Y.Text)
+ *   const binding = new Y.QuillBinding(textarea, type)
+ *
+ */
 export default class TextareaBinding extends Binding {
   constructor (textType, domTextarea) {
     // Binding handles textType as this.type and domTextarea as this.target
diff --git a/src/MessageHandler/binaryEncode.js b/src/MessageHandler/binaryEncode.js
index 3a767a13..dafdff36 100644
--- a/src/MessageHandler/binaryEncode.js
+++ b/src/MessageHandler/binaryEncode.js
@@ -1,8 +1,15 @@
+
 import { writeStructs } from './syncStep1.js'
 import { integrateRemoteStructs } from './integrateRemoteStructs.js'
 import { readDeleteSet, writeDeleteSet } from './deleteSet.js'
 import BinaryEncoder from '../Binary/Encoder.js'
 
+/**
+ * Read the Decoder and fill the Yjs instance with data in the decoder.
+ *
+ * @param {Y} y The Yjs instance
+ * @param {BinaryDecoder} decoder The BinaryDecoder to read from.
+ */
 export function fromBinary (y, decoder) {
   y.transact(function () {
     integrateRemoteStructs(y, decoder)
@@ -10,6 +17,13 @@ export function fromBinary (y, decoder) {
   })
 }
 
+/**
+ * Encode the Yjs model to binary format.
+ *
+ * @param {Y} y The Yjs instance
+ * @return {BinaryEncoder} The encoder instance that can be transformed
+ *                         to ArrayBuffer or Buffer.
+ */
 export function toBinary (y) {
   let encoder = new BinaryEncoder()
   writeStructs(y, encoder, new Map())
diff --git a/src/MessageHandler/integrateRemoteStructs.js b/src/MessageHandler/integrateRemoteStructs.js
index 97b49211..4e02c752 100644
--- a/src/MessageHandler/integrateRemoteStructs.js
+++ b/src/MessageHandler/integrateRemoteStructs.js
@@ -11,6 +11,7 @@ class MissingEntry {
 }
 
 /**
+ * @private
  * Integrate remote struct
  * When a remote struct is integrated, other structs might be ready to ready to
  * integrate.
diff --git a/src/MessageHandler/syncStep1.js b/src/MessageHandler/syncStep1.js
index 468a7f88..ad73bf6c 100644
--- a/src/MessageHandler/syncStep1.js
+++ b/src/MessageHandler/syncStep1.js
@@ -30,6 +30,11 @@ export function sendSyncStep1 (connector, syncUser) {
   connector.send(syncUser, encoder.createBuffer())
 }
 
+/**
+ * @private
+ * Write all Items that are not not included in ss to
+ * the encoder object.
+ */
 export function writeStructs (y, encoder, ss) {
   const lenPos = encoder.pos
   encoder.writeUint32(0)
diff --git a/src/Persistence.js b/src/Persistence.js
index 38766bb9..91bbdd2a 100644
--- a/src/Persistence.js
+++ b/src/Persistence.js
@@ -13,6 +13,10 @@ function getFreshCnf () {
   }
 }
 
+/**
+ * @private
+ * Abstract persistence class.
+ */
 export default class AbstractPersistence {
   constructor (opts) {
     this.opts = opts
diff --git a/src/Struct/Delete.js b/src/Struct/Delete.js
index a42874b9..c6de21e7 100644
--- a/src/Struct/Delete.js
+++ b/src/Struct/Delete.js
@@ -3,6 +3,7 @@ import ID from '../Util/ID.js'
 import { logID } from '../MessageHandler/messageToString.js'
 
 /**
+ * @private
  * Delete all items in an ID-range
  * TODO: implement getItemCleanStartNode for better performance (only one lookup)
  */
@@ -35,13 +36,26 @@ export function deleteItemRange (y, user, clock, range) {
 }
 
 /**
- * Delete is not a real struct. It will not be saved in OS
+ * @private
+ * A Delete change is not a real Item, but it provides the same interface as an
+ * Item. The only difference is that it will not be saved in the ItemStore
+ * (OperationStore), but instead it is safed in the DeleteStore.
  */
 export default class Delete {
   constructor () {
     this._target = null
     this._length = null
   }
+
+  /**
+   * @private
+   * Read the next Item in a Decoder and fill this Item with the read data.
+   *
+   * This is called when data is received from a remote peer.
+   *
+   * @param {Y} y The Yjs instance that this Item belongs to.
+   * @param {BinaryDecoder} decoder The decoder object to read data from.
+   */
   _fromBinary (y, decoder) {
     // TODO: set target, and add it to missing if not found
     // There is an edge case in p2p networks!
@@ -54,15 +68,32 @@ export default class Delete {
       return []
     }
   }
+
+  /**
+   * @private
+   * Transform the properties of this type to binary and write it to an
+   * BinaryEncoder.
+   *
+   * This is called when this Item is sent to a remote peer.
+   *
+   * @param {BinaryEncoder} encoder The encoder to write data to.
+   */
   _toBinary (encoder) {
     encoder.writeUint8(getReference(this.constructor))
     encoder.writeID(this._targetID)
     encoder.writeVarUint(this._length)
   }
+
   /**
-   * - If created remotely (a remote user deleted something),
+   * @private
+   * Integrates this Item into the shared structure.
+   *
+   * This method actually applies the change to the Yjs instance. In the case of
+   * Delete it marks the delete target as deleted.
+   *
+   * * If created remotely (a remote user deleted something),
    *   this Delete is applied to all structs in id-range.
-   * - If created lokally (e.g. when y-array deletes a range of elements),
+   * * If created lokally (e.g. when y-array deletes a range of elements),
    *   this struct is broadcasted only (it is already executed)
    */
   _integrate (y, locallyCreated = false) {
@@ -78,6 +109,12 @@ export default class Delete {
       y.persistence.saveStruct(y, this)
     }
   }
+
+  /**
+   * @private
+   * Transform this Delete to a readable format.
+   * Useful for logging as all Items implement this method.
+   */
   _logString () {
     return `Delete - target: ${logID(this._targetID)}, len: ${this._length}`
   }
diff --git a/src/Struct/Item.js b/src/Struct/Item.js
index 120c4e75..eba53d8a 100644
--- a/src/Struct/Item.js
+++ b/src/Struct/Item.js
@@ -5,11 +5,12 @@ import Delete from './Delete.js'
 import { transactionTypeChanged } from '../Transaction.js'
 
 /**
- * Helper utility to split an Item (see _splitAt)
- * - copy all properties from a to b
- * - connect a to b
+ * @private
+ * Helper utility to split an Item (see {@link Item#_splitAt})
+ * - copies all properties from a to b
+ * - connects a to b
  * - assigns the correct _id
- * - save b to os
+ * - saves b to os
  */
 export function splitHelper (y, a, b, diff) {
   const aID = a._id
@@ -46,6 +47,10 @@ export function splitHelper (y, a, b, diff) {
   }
 }
 
+/**
+ * @private
+ * Abstract class that represents any content.
+ */
 export default class Item {
   constructor () {
     this._id = null
@@ -58,14 +63,18 @@ export default class Item {
     this._deleted = false
     this._redone = null
   }
+
   /**
-   * Create a operation with the same effect (without position effect)
+   * @private
+   * Creates an Item with the same effect as this Item (without position effect)
    */
   _copy () {
     return new this.constructor()
   }
+
   /**
-   * Redo the effect of this operation.
+   * @private
+   * Redoes the effect of this operation.
    */
   _redo (y) {
     if (this._redone !== null) {
@@ -106,27 +115,43 @@ export default class Item {
     return struct
   }
 
+  /**
+   * @private
+   * Computes the last content address of this Item.
+   */
   get _lastId () {
     return new ID(this._id.user, this._id.clock + this._length - 1)
   }
+
+  /**
+   * @private
+   * Computes the length of this Item.
+   */
   get _length () {
     return 1
   }
+
   /**
-   * Some elements are not supposed to be addressable. For example, an
-   * ItemFormat should not be retrievable via yarray.get(pos)
+   * @private
+   * Should return false if this Item is some kind of meta information
+   * (e.g. format information).
+   *
+   * * Whether this Item should be addressable via `yarray.get(i)`
+   * * Whether this Item should be counted when computing yarray.length
    */
   get _countable () {
     return true
   }
+
   /**
-   * Splits this struct so that another struct can be inserted in-between.
+   * @private
+   * Splits this Item so that another Items can be inserted in-between.
    * This must be overwritten if _length > 1
    * Returns right part after split
-   * - diff === 0 => this
-   * - diff === length => this._right
-   * - otherwise => split _content and return right part of split
-   * (see ItemJSON/ItemString for implementation)
+   * * diff === 0 => this
+   * * diff === length => this._right
+   * * otherwise => split _content and return right part of split
+   * (see {@link ItemJSON}/{@link ItemString} for implementation)
    */
   _splitAt (y, diff) {
     if (diff === 0) {
@@ -134,6 +159,15 @@ export default class Item {
     }
     return this._right
   }
+
+  /**
+   * @private
+   * Mark this Item as deleted.
+   *
+   * @param {Y} y The Yjs instance
+   * @param {boolean} createDelete Whether to propagate a message that this
+   *                               Type was deleted.
+   */
   _delete (y, createDelete = true) {
     if (!this._deleted) {
       this._deleted = true
@@ -152,17 +186,27 @@ export default class Item {
       y._transaction.deletedStructs.add(this)
     }
   }
+
   /**
-   * This is called right before this struct receives any children.
+   * @private
+   * This is called right before this Item receives any children.
    * It can be overwritten to apply pending changes before applying remote changes
    */
   _beforeChange () {
     // nop
   }
-  /*
-   * - Integrate the struct so that other types/structs can see it
-   * - Add this struct to y.os
-   * - Check if this is struct deleted
+
+  /**
+   * @private
+   * Integrates this Item into the shared structure.
+   *
+   * This method actually applies the change to the Yjs instance. In case of
+   * Item it connects _left and _right to this Item and calls the
+   * {@link Item#beforeChange} method.
+   *
+   * * Integrate the struct so that other types/structs can see it
+   * * Add this struct to y.os
+   * * Check if this is struct deleted
    */
   _integrate (y) {
     y._transaction.newTypes.add(this)
@@ -188,6 +232,7 @@ export default class Item {
       // or this types is new
       this._parent._beforeChange()
     }
+
     /*
     # $this has to find a unique position between origin and the next known character
     # case 1: $origin equals $o.origin: the $creator parameter decides if left or right
@@ -280,6 +325,16 @@ export default class Item {
       }
     }
   }
+
+  /**
+   * @private
+   * Transform the properties of this type to binary and write it to an
+   * BinaryEncoder.
+   *
+   * This is called when this Item is sent to a remote peer.
+   *
+   * @param {BinaryEncoder} encoder The encoder to write data to.
+   */
   _toBinary (encoder) {
     encoder.writeUint8(getReference(this.constructor))
     let info = 0
@@ -320,6 +375,16 @@ export default class Item {
       encoder.writeVarString(JSON.stringify(this._parentSub))
     }
   }
+
+  /**
+   * @private
+   * Read the next Item in a Decoder and fill this Item with the read data.
+   *
+   * This is called when data is received from a remote peer.
+   *
+   * @param {Y} y The Yjs instance that this Item belongs to.
+   * @param {BinaryDecoder} decoder The decoder object to read data from.
+   */
   _fromBinary (y, decoder) {
     let missing = []
     const info = decoder.readUint8()
diff --git a/src/Struct/Type.js b/src/Struct/Type.js
index 80d93fed..a37aff51 100644
--- a/src/Struct/Type.js
+++ b/src/Struct/Type.js
@@ -30,6 +30,9 @@ export function getListItemIDByPosition (type, i) {
   }
 }
 
+/**
+ * Abstract Yjs Type class
+ */
 export default class Type extends Item {
   constructor () {
     super()
@@ -39,6 +42,20 @@ export default class Type extends Item {
     this._eventHandler = new EventHandler()
     this._deepEventHandler = new EventHandler()
   }
+
+  /**
+   * Compute the path from this type to the specified target.
+   *
+   * @example
+   *   It should be accessible via `this.get(result[0]).get(result[1])..``
+   *   const path = type.getPathTo(child)
+   *   // assuming `type instanceof YArray`
+   *   console.log(path) // might look like => [2, 'key1']
+   *   child === type.get(path[0]).get(path[1])
+   *
+   * @param {YType} type Type target
+   * @return {Array<string>} Path to the target
+   */
   getPathTo (type) {
     if (type === this) {
       return []
@@ -65,6 +82,12 @@ export default class Type extends Item {
     }
     return path
   }
+
+  /**
+   * @private
+   * Call event listeners with an event. This will also add an event to all
+   * parents (for `.observeDeep` handlers).
+   */
   _callEventHandler (transaction, event) {
     const changedParentTypes = transaction.changedParentTypes
     this._eventHandler.callEventListeners(transaction, event)
@@ -79,6 +102,14 @@ export default class Type extends Item {
       type = type._parent
     }
   }
+
+  /**
+   * @private
+   * Helper method to transact if the y instance is available.
+   *
+   * TODO: Currently event handlers are not thrown when a type is not registered
+   *       with a Yjs instance.
+   */
   _transact (f) {
     const y = this._y
     if (y !== null) {
@@ -87,18 +118,53 @@ export default class Type extends Item {
       f(y)
     }
   }
+
+  /**
+   * Observe all events that are created on this type.
+   *
+   * @param {Function} f Observer function
+   */
   observe (f) {
     this._eventHandler.addEventListener(f)
   }
+
+  /**
+   * Observe all events that are created by this type and its children.
+   *
+   * @param {Function} f Observer function
+   */
   observeDeep (f) {
     this._deepEventHandler.addEventListener(f)
   }
+
+  /**
+   * Unregister an observer function.
+   *
+   * @param {Function} f Observer function
+   */
   unobserve (f) {
     this._eventHandler.removeEventListener(f)
   }
+
+  /**
+   * Unregister an observer function.
+   *
+   * @param {Function} f Observer function
+   */
   unobserveDeep (f) {
     this._deepEventHandler.removeEventListener(f)
   }
+
+  /**
+   * @private
+   * Integrate this type into the Yjs instance.
+   *
+   * * Save this struct in the os
+   * * This type is sent to other client
+   * * Observer functions are fired
+   *
+   * @param {Y} y The Yjs instance
+   */
   _integrate (y) {
     super._integrate(y)
     this._y = y
@@ -117,6 +183,15 @@ export default class Type extends Item {
       integrateChildren(y, t)
     }
   }
+
+  /**
+   * @private
+   * Mark this Item as deleted.
+   *
+   * @param {Y} y The Yjs instance
+   * @param {boolean} createDelete Whether to propagate a message that this
+   *                               Type was deleted.
+   */
   _delete (y, createDelete) {
     super._delete(y, createDelete)
     y._transaction.changedTypes.delete(this)
diff --git a/src/Transaction.js b/src/Transaction.js
index 6a99a96b..4b372fdf 100644
--- a/src/Transaction.js
+++ b/src/Transaction.js
@@ -1,4 +1,12 @@
 
+/**
+ * Changes that are created within a transaction are bundled and sent as one
+ * message to the remote peers. This implies that the changes are applied
+ * in one flush and at most one {@link YEvent} per type is created.
+ *
+ * It is best to bundle as many changes in a single Transaction as possible.
+ * This way only few changes need to be computed
+ */
 export default class Transaction {
   constructor (y) {
     this.y = y
diff --git a/src/Type/YArray.js b/src/Type/YArray.js
index b017266b..5ef5e50a 100644
--- a/src/Type/YArray.js
+++ b/src/Type/YArray.js
@@ -4,6 +4,13 @@ import ItemString from '../Struct/ItemString.js'
 import { logID } from '../MessageHandler/messageToString.js'
 import YEvent from '../Util/YEvent.js'
 
+/**
+ * Event that describes the changes on a YArray
+ *
+ * @param {YArray} yarray The changed type
+ * @param {Boolean} remote Whether the changed was caused by a remote peer
+ * @param {Transaction} transaction The transaction object
+ */
 export class YArrayEvent extends YEvent {
   constructor (yarray, remote, transaction) {
     super(yarray)
@@ -12,6 +19,12 @@ export class YArrayEvent extends YEvent {
     this._addedElements = null
     this._removedElements = null
   }
+
+  /**
+   * Child elements that were added in this transaction.
+   *
+   * @return {Set}
+   */
   get addedElements () {
     if (this._addedElements === null) {
       const target = this.target
@@ -26,6 +39,12 @@ export class YArrayEvent extends YEvent {
     }
     return this._addedElements
   }
+
+  /**
+   * Child elements that were removed in this transaction.
+   *
+   * @return {Set}
+   */
   get removedElements () {
     if (this._removedElements === null) {
       const target = this.target
@@ -42,29 +61,54 @@ export class YArrayEvent extends YEvent {
   }
 }
 
+/**
+ * A shared Array implementation.
+ */
 export default class YArray extends Type {
+  /**
+   * @private
+   * Creates YArray Event and calls observers.
+   */
   _callObserver (transaction, parentSubs, remote) {
     this._callEventHandler(transaction, new YArrayEvent(this, remote, transaction))
   }
-  get (pos) {
+
+  /**
+   * Returns the i-th element from a YArray.
+   *
+   * @param {Integer} index The index of the element to return from the YArray
+   */
+  get (index) {
     let n = this._start
     while (n !== null) {
       if (!n._deleted && n._countable) {
-        if (pos < n._length) {
+        if (index < n._length) {
           if (n.constructor === ItemJSON || n.constructor === ItemString) {
-            return n._content[pos]
+            return n._content[index]
           } else {
             return n
           }
         }
-        pos -= n._length
+        index -= n._length
       }
       n = n._right
     }
   }
+
+  /**
+   * Transforms this YArray to a JavaScript Array.
+   *
+   * @return {Array}
+   */
   toArray () {
     return this.map(c => c)
   }
+
+  /**
+   * Transforms this Shared Type to a JSON object.
+   *
+   * @return {Array}
+   */
   toJSON () {
     return this.map(c => {
       if (c instanceof Type) {
@@ -77,6 +121,15 @@ export default class YArray extends Type {
       return c
     })
   }
+
+  /**
+   * Returns an Array with the result of calling a provided function on every
+   * element of this YArray.
+   *
+   * @param {Function} f Function that produces an element of the new Array
+   * @return {Array} A new array with each element being the result of the
+   *                 callback function
+   */
   map (f) {
     const res = []
     this.forEach((c, i) => {
@@ -84,25 +137,35 @@ export default class YArray extends Type {
     })
     return res
   }
+
+  /**
+   * Executes a provided function on once on overy element of this YArray.
+   *
+   * @param {Function} f A function to execute on every element of this YArray.
+   */
   forEach (f) {
-    let pos = 0
+    let index = 0
     let n = this._start
     while (n !== null) {
       if (!n._deleted && n._countable) {
         if (n instanceof Type) {
-          f(n, pos++, this)
+          f(n, index++, this)
         } else {
           const content = n._content
           const contentLen = content.length
           for (let i = 0; i < contentLen; i++) {
-            pos++
-            f(content[i], pos, this)
+            index++
+            f(content[i], index, this)
           }
         }
       }
       n = n._right
     }
   }
+
+  /**
+   * Computes the length of this YArray.
+   */
   get length () {
     let length = 0
     let n = this._start
@@ -114,6 +177,7 @@ export default class YArray extends Type {
     }
     return length
   }
+
   [Symbol.iterator] () {
     return {
       next: function () {
@@ -143,14 +207,21 @@ export default class YArray extends Type {
       _count: 0
     }
   }
-  delete (pos, length = 1) {
+
+  /**
+   * Deletes elements starting from an index.
+   *
+   * @param {Integer} index Index at which to start deleting elements
+   * @param {Integer} length The number of elements to remove. Defaults to 1.
+   */
+  delete (index, length = 1) {
     this._y.transact(() => {
       let item = this._start
       let count = 0
       while (item !== null && length > 0) {
         if (!item._deleted && item._countable) {
-          if (count <= pos && pos < count + item._length) {
-            const diffDel = pos - count
+          if (count <= index && index < count + item._length) {
+            const diffDel = index - count
             item = item._splitAt(this._y, diffDel)
             item._splitAt(this._y, length)
             length -= item._length
@@ -167,6 +238,14 @@ export default class YArray extends Type {
       throw new Error('Delete exceeds the range of the YArray')
     }
   }
+
+  /**
+   * @private
+   * Inserts content after an element container.
+   *
+   * @param {Item} left The element container to use as a reference.
+   * @param {Array} content The Array of content to insert (see {@see insert})
+   */
   insertAfter (left, content) {
     this._transact(y => {
       let right
@@ -224,7 +303,24 @@ export default class YArray extends Type {
       }
     })
   }
-  insert (pos, content) {
+
+  /**
+   * Inserts new content at an index.
+   *
+   * Important: This function expects an array of content. Not just a content
+   * object. The reason for this "weirdness" is that inserting several elements
+   * is very efficient when it is done as a single operation.
+   *
+   * @example
+   *  // Insert character 'a' at position 0
+   *  yarray.insert(0, ['a'])
+   *  // Insert numbers 1, 2 at position 1
+   *  yarray.insert(2, [1, 2])
+   *
+   * @param {Integer} index The index to insert content at.
+   * @param {Array} content The array of content
+   */
+  insert (index, content) {
     this._transact(() => {
       let left = null
       let right = this._start
@@ -232,8 +328,8 @@ export default class YArray extends Type {
       const y = this._y
       while (right !== null) {
         const rightLen = right._deleted ? 0 : (right._length - 1)
-        if (count <= pos && pos <= count + rightLen) {
-          const splitDiff = pos - count
+        if (count <= index && index <= count + rightLen) {
+          const splitDiff = index - count
           right = right._splitAt(y, splitDiff)
           left = right._left
           count += splitDiff
@@ -245,12 +341,18 @@ export default class YArray extends Type {
         left = right
         right = right._right
       }
-      if (pos > count) {
-        throw new Error('Position exceeds array range!')
+      if (index > count) {
+        throw new Error('Index exceeds array range!')
       }
       this.insertAfter(left, content)
     })
   }
+
+  /**
+   * Appends content to this YArray.
+   *
+   * @param {Array} content Array of content to append.
+   */
   push (content) {
     let n = this._start
     let lastUndeleted = null
@@ -262,6 +364,12 @@ export default class YArray extends Type {
     }
     this.insertAfter(lastUndeleted, content)
   }
+
+  /**
+   * @private
+   * Transform this YArray to a readable format.
+   * Useful for logging as all Items implement this method.
+   */
   _logString () {
     const left = this._left !== null ? this._left._lastId : null
     const origin = this._origin !== null ? this._origin._lastId : null
diff --git a/src/Type/YMap.js b/src/Type/YMap.js
index 06391571..6103b127 100644
--- a/src/Type/YMap.js
+++ b/src/Type/YMap.js
@@ -4,7 +4,14 @@ import ItemJSON from '../Struct/ItemJSON.js'
 import { logID } from '../MessageHandler/messageToString.js'
 import YEvent from '../Util/YEvent.js'
 
-class YMapEvent extends YEvent {
+/**
+ * Event that describes the changes on a YMap.
+ *
+ * @param {YMap} ymap The YArray that changed.
+ * @param {Set<any>} subs The keys that changed.
+ * @param {boolean} remote Whether the change was created by a remote peer.
+ */
+export class YMapEvent extends YEvent {
   constructor (ymap, subs, remote) {
     super(ymap)
     this.keysChanged = subs
@@ -12,10 +19,23 @@ class YMapEvent extends YEvent {
   }
 }
 
+/**
+ * A shared Map implementation.
+ */
 export default class YMap extends Type {
+  /**
+   * @private
+   * Creates YMap Event and calls observers.
+   */
   _callObserver (transaction, parentSubs, remote) {
     this._callEventHandler(transaction, new YMapEvent(this, parentSubs, remote))
   }
+
+  /**
+   * Transforms this Shared Type to a JSON object.
+   *
+   * @return {Object}
+   */
   toJSON () {
     const map = {}
     for (let [key, item] of this._map) {
@@ -35,7 +55,14 @@ export default class YMap extends Type {
     }
     return map
   }
+
+  /**
+   * Returns the keys for each element in the YMap Type.
+   *
+   * @return {Array}
+   */
   keys () {
+    // TODO: Should return either Iterator or Set!
     let keys = []
     for (let [key, value] of this._map) {
       if (!value._deleted) {
@@ -44,6 +71,12 @@ export default class YMap extends Type {
     }
     return keys
   }
+
+  /**
+   * Remove a specified element from this YMap.
+   *
+   * @param {encodable} key The key of the element to remove.
+   */
   delete (key) {
     this._transact((y) => {
       let c = this._map.get(key)
@@ -52,11 +85,22 @@ export default class YMap extends Type {
       }
     })
   }
+
+  /**
+   * Adds or updates an element with a specified key and value.
+   *
+   * @param {encodable} key The key of the element to add to this YMap.
+   * @param {encodable | YType} value The value of the element to add to this
+   *                                  YMap.
+   */
   set (key, value) {
     this._transact(y => {
       const old = this._map.get(key) || null
       if (old !== null) {
-        if (old.constructor === ItemJSON && !old._deleted && old._content[0] === value) {
+        if (
+          old.constructor === ItemJSON &&
+          !old._deleted && old._content[0] === value
+        ) {
           // Trying to overwrite with same value
           // break here
           return value
@@ -87,6 +131,12 @@ export default class YMap extends Type {
     })
     return value
   }
+
+  /**
+   * Returns a specified element from this YMap.
+   *
+   * @param {encodable} key The key of the element to return.
+   */
   get (key) {
     let v = this._map.get(key)
     if (v === undefined || v._deleted) {
@@ -98,6 +148,12 @@ export default class YMap extends Type {
       return v._content[v._content.length - 1]
     }
   }
+
+  /**
+   * Returns a boolean indicating whether the specified key exists or not.
+   *
+   * @param {encodable} key The key to test.
+   */
   has (key) {
     let v = this._map.get(key)
     if (v === undefined || v._deleted) {
@@ -106,6 +162,12 @@ export default class YMap extends Type {
       return true
     }
   }
+
+  /**
+   * @private
+   * Transform this YMap to a readable format.
+   * Useful for logging as all Items implement this method.
+   */
   _logString () {
     const left = this._left !== null ? this._left._lastId : null
     const origin = this._origin !== null ? this._origin._lastId : null
diff --git a/src/Type/YText.js b/src/Type/YText.js
index 926d8ef7..3f565e53 100644
--- a/src/Type/YText.js
+++ b/src/Type/YText.js
@@ -46,11 +46,11 @@ function findNextPosition (currentAttributes, parent, left, right, count) {
   return [left, right, currentAttributes]
 }
 
-function findPosition (parent, pos) {
+function findPosition (parent, index) {
   let currentAttributes = new Map()
   let left = null
   let right = parent._start
-  return findNextPosition(currentAttributes, parent, left, right, pos)
+  return findNextPosition(currentAttributes, parent, left, right, index)
 }
 
 // negate applied formats
@@ -212,11 +212,50 @@ function deleteText (y, length, parent, left, right, currentAttributes) {
   return [left, right]
 }
 
+// TODO: In the quill delta representation we should also use the format {ops:[..]}
+/**
+ * The Quill Delta format represents changes on a text document with
+ * formatting information. For mor information visit {@link https://quilljs.com/docs/delta/|Quill Delta}
+ *
+ * @example
+ *   {
+ *     ops: [
+ *       { insert: 'Gandalf', attributes: { bold: true } },
+ *       { insert: ' the ' },
+ *       { insert: 'Grey', attributes: { color: '#cccccc' } }
+ *     ]
+ *   }
+ *
+ * @typedef {Array<Object>} Delta
+ */
+
+ /**
+  * Attributes that can be assigned to a selection of text.
+  *
+  * @example
+  *   {
+  *     bold: true,
+  *     font-size: '40px'
+  *   }
+  *
+  * @typedef {Object} TextAttributes
+  */
+
+/**
+ * Event that describes the changes on a YText type.
+ */
 class YTextEvent extends YArrayEvent {
   constructor (ytext, remote, transaction) {
     super(ytext, remote, transaction)
     this._delta = null
   }
+
+  /**
+   * Compute the changes in the delta format.
+   *
+   * @return {Delta} A {@link https://quilljs.com/docs/delta/|Quill Delta}) that
+   *                 represents the changes on the document.
+   */
   get delta () {
     if (this._delta === null) {
       const y = this.target._y
@@ -378,6 +417,15 @@ class YTextEvent extends YArrayEvent {
   }
 }
 
+/**
+ * Type that represents text with formatting information.
+ *
+ * This type replaces y-richtext as this implementation is able to handle
+ * block formats (format information on a paragraph), embeds (complex elements
+ * like pictures and videos), and text formats (**bold**, *italic*).
+ *
+ * @param {String} string The initial value of the YText.
+ */
 export default class YText extends YArray {
   constructor (string) {
     super()
@@ -388,9 +436,18 @@ export default class YText extends YArray {
       this._start = start
     }
   }
+
+  /**
+   * @private
+   * Creates YMap Event and calls observers.
+   */
   _callObserver (transaction, parentSubs, remote) {
     this._callEventHandler(transaction, new YTextEvent(this, remote, transaction))
   }
+
+  /**
+   * Returns the unformatted string representation of this YText type.
+   */
   toString () {
     let str = ''
     let n = this._start
@@ -402,6 +459,12 @@ export default class YText extends YArray {
     }
     return str
   }
+
+  /**
+   * Apply a {@link Delta} on this shared YText type.
+   *
+   * @param {Delta} delta The changes to apply on this element.
+   */
   applyDelta (delta) {
     this._transact(y => {
       let left = null
@@ -419,8 +482,11 @@ export default class YText extends YArray {
       }
     })
   }
+
   /**
-   * As defined by Quilljs - https://quilljs.com/docs/delta/
+   * Returns the Delta representation of this YText type.
+   *
+   * @return {Delta} The Delta representation of this type.
    */
   toDelta () {
     let ops = []
@@ -461,42 +527,84 @@ export default class YText extends YArray {
     packStr()
     return ops
   }
-  insert (pos, text, attributes = {}) {
+
+  /**
+   * Insert text at a given index.
+   *
+   * @param {Integer} index The index at which to start inserting.
+   * @param {String} text The text to insert at the specified position.
+   * @param {TextAttributes} attributes Optionally define some formatting
+   *                                    information to apply on the inserted
+   *                                    Text.
+   */
+  insert (index, text, attributes = {}) {
     if (text.length <= 0) {
       return
     }
     this._transact(y => {
-      let [left, right, currentAttributes] = findPosition(this, pos)
+      let [left, right, currentAttributes] = findPosition(this, index)
       insertText(y, text, this, left, right, currentAttributes, attributes)
     })
   }
-  insertEmbed (pos, embed, attributes = {}) {
+
+  /**
+   * Inserts an embed at a index.
+   *
+   * @param {Integer} index The index to insert the embed at.
+   * @param {Object} embed The Object that represents the embed.
+   * @param {TextAttributes} attributes Attribute information to apply on the
+   *                                    embed
+   *
+   */
+  insertEmbed (index, embed, attributes = {}) {
     if (embed.constructor !== Object) {
       throw new Error('Embed must be an Object')
     }
     this._transact(y => {
-      let [left, right, currentAttributes] = findPosition(this, pos)
+      let [left, right, currentAttributes] = findPosition(this, index)
       insertText(y, embed, this, left, right, currentAttributes, attributes)
     })
   }
-  delete (pos, length) {
+
+  /**
+   * Deletes text starting from an index.
+   *
+   * @param {Integer} index Index at which to start deleting.
+   * @param {Integer} length The number of characters to remove. Defaults to 1.
+   */
+  delete (index, length) {
     if (length === 0) {
       return
     }
     this._transact(y => {
-      let [left, right, currentAttributes] = findPosition(this, pos)
+      let [left, right, currentAttributes] = findPosition(this, index)
       deleteText(y, length, this, left, right, currentAttributes)
     })
   }
-  format (pos, length, attributes) {
+
+  /**
+   * Assigns properties to a range of text.
+   *
+   * @param {Integer} index The position where to start formatting.
+   * @param {Integer} length The amount of characters to assign properties to.
+   * @param {TextAttributes} attributes Attribute information to apply on the
+   *                                    text.
+   */
+  format (index, length, attributes) {
     this._transact(y => {
-      let [left, right, currentAttributes] = findPosition(this, pos)
+      let [left, right, currentAttributes] = findPosition(this, index)
       if (right === null) {
         return
       }
       formatText(y, length, this, left, right, currentAttributes, attributes)
     })
   }
+
+  /**
+   * @private
+   * Transform this YText to a readable format.
+   * Useful for logging as all Items implement this method.
+   */
   _logString () {
     const left = this._left !== null ? this._left._lastId : null
     const origin = this._origin !== null ? this._origin._lastId : null
diff --git a/src/Type/y-xml/YXmlElement.js b/src/Type/y-xml/YXmlElement.js
index c795879c..bbfaf7c3 100644
--- a/src/Type/y-xml/YXmlElement.js
+++ b/src/Type/y-xml/YXmlElement.js
@@ -3,6 +3,16 @@ import { defaultDomFilter } from './utils.js'
 import YMap from '../YMap.js'
 import { YXmlFragment } from './y-xml.js'
 
+/**
+ * An YXmlElement imitates the behavior of a
+ * {@link https://developer.mozilla.org/en-US/docs/Web/API/Element|Dom Element}.
+ *
+ * * An YXmlElement has attributes (key value pairs)
+ * * An YXmlElement has childElements that must inherit from YXmlElement
+ *
+ * @param {String} arg1 Node name
+ * @param {Function} arg2 Dom filter
+ */
 export default class YXmlElement extends YXmlFragment {
   constructor (arg1, arg2, _document) {
     super()
@@ -20,11 +30,21 @@ export default class YXmlElement extends YXmlFragment {
       this._domFilter = arg2
     }
   }
+
+  /**
+   * @private
+   * Creates an Item with the same effect as this Item (without position effect)
+   */
   _copy () {
     let struct = super._copy()
     struct.nodeName = this.nodeName
     return struct
   }
+
+  /**
+   * @private
+   * Copies children and attributes from a dom node to this YXmlElement.
+   */
   _setDom (dom, _document) {
     if (this._dom != null) {
       throw new Error('Only call this method if you know what you are doing ;)')
@@ -48,20 +68,61 @@ export default class YXmlElement extends YXmlFragment {
       return dom
     }
   }
+
+  /**
+   * @private
+   * Bind a dom to to this YXmlElement. This means that the DOM changes when the
+   * YXmlElement is modified and that this YXmlElement changes when the DOM is
+   * modified.
+   *
+   * Currently only works in YXmlFragment.
+   */
   _bindToDom (dom, _document) {
     _document = _document || document
     this._dom = dom
     dom._yxml = this
   }
+
+  /**
+   * @private
+   * Read the next Item in a Decoder and fill this Item with the read data.
+   *
+   * This is called when data is received from a remote peer.
+   *
+   * @param {Y} y The Yjs instance that this Item belongs to.
+   * @param {BinaryDecoder} decoder The decoder object to read data from.
+   */
   _fromBinary (y, decoder) {
     const missing = super._fromBinary(y, decoder)
     this.nodeName = decoder.readVarString()
     return missing
   }
+
+  /**
+   * @private
+   * Transform the properties of this type to binary and write it to an
+   * BinaryEncoder.
+   *
+   * This is called when this Item is sent to a remote peer.
+   *
+   * @param {BinaryEncoder} encoder The encoder to write data to.
+   */
   _toBinary (encoder) {
     super._toBinary(encoder)
     encoder.writeVarString(this.nodeName)
   }
+
+  /**
+   * @private
+   * Integrates this Item into the shared structure.
+   *
+   * This method actually applies the change to the Yjs instance. In case of
+   * Item it connects _left and _right to this Item and calls the
+   * {@link Item#beforeChange} method.
+   *
+   * * Checks for nodeName
+   * * Sets domFilter
+   */
   _integrate (y) {
     if (this.nodeName === null) {
       throw new Error('nodeName must be defined!')
@@ -71,8 +132,9 @@ export default class YXmlElement extends YXmlFragment {
     }
     super._integrate(y)
   }
+
   /**
-   * Returns the string representation of the XML document.
+   * Returns the string representation of this YXmlElement.
    * The attributes are ordered by attribute-name, so you can easily use this
    * method to compare YXmlElements
    */
@@ -93,18 +155,42 @@ export default class YXmlElement extends YXmlFragment {
     const attrsString = stringBuilder.length > 0 ? ' ' + stringBuilder.join(' ') : ''
     return `<${nodeName}${attrsString}>${super.toString()}</${nodeName}>`
   }
+
+  /**
+   * Removes an attribute from this YXmlElement.
+   *
+   * @param {String} attributeName The attribute name that is to be removed.
+   */
   removeAttribute () {
     return YMap.prototype.delete.apply(this, arguments)
   }
 
+  /**
+   * Sets or updates an attribute.
+   *
+   * @param {String} attributeName The attribute name that is to be set.
+   * @param {String} attributeValue The attribute value that is to be set.
+   */
   setAttribute () {
     return YMap.prototype.set.apply(this, arguments)
   }
 
+  /**
+   * Returns an attribute value that belongs to the attribute name.
+   *
+   * @param {String} attributeName The attribute name that identifies the
+   *                               queried value.
+   * @return {String} The queried attribute value
+   */
   getAttribute () {
     return YMap.prototype.get.apply(this, arguments)
   }
 
+  /**
+   * Returns all attribute name/value pairs in a JSON Object.
+   *
+   * @return {Object} A JSON Object that describes the attributes.
+   */
   getAttributes () {
     const obj = {}
     for (let [key, value] of this._map) {
@@ -114,6 +200,12 @@ export default class YXmlElement extends YXmlFragment {
     }
     return obj
   }
+
+  /**
+   * Creates a Dom Element that mirrors this YXmlElement.
+   *
+   * @return {Element} The {@link https://developer.mozilla.org/en-US/docs/Web/API/Element|Dom Element}
+   */
   getDom (_document) {
     _document = _document || document
     let dom = this._dom
diff --git a/src/Type/y-xml/YXmlEvent.js b/src/Type/y-xml/YXmlEvent.js
index b63f300d..b27eb139 100644
--- a/src/Type/y-xml/YXmlEvent.js
+++ b/src/Type/y-xml/YXmlEvent.js
@@ -1,5 +1,8 @@
 import YEvent from '../../Util/YEvent.js'
 
+/**
+ * An Event that describes changes on a YXml Element or Yxml Fragment
+ */
 export default class YXmlEvent extends YEvent {
   constructor (target, subs, remote) {
     super(target)
diff --git a/src/Type/y-xml/YXmlFragment.js b/src/Type/y-xml/YXmlFragment.js
index ace6b680..96663f03 100644
--- a/src/Type/y-xml/YXmlFragment.js
+++ b/src/Type/y-xml/YXmlFragment.js
@@ -36,6 +36,24 @@ function domToYXml (parent, doms, _document) {
   return types
 }
 
+/**
+ * Define the elements to which a set of CSS queries apply.
+ * {@link https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors|CSS_Selectors}
+ *
+ * @example
+ *   query = '.classSelector'
+ *   query = 'nodeSelector'
+ *   query = '#idSelector'
+ *
+ * @typedef {string} CSS_Selector
+ */
+
+/**
+ * Represents a subset of the nodes of a YXmlElement / YXmlFragment and a
+ * position within them.
+ *
+ * Can be created with {@link YXmlFragment#createTreeWalker}
+ */
 class YXmlTreeWalker {
   constructor (root, f) {
     this._filter = f || (() => true)
@@ -46,6 +64,11 @@ class YXmlTreeWalker {
   [Symbol.iterator] () {
     return this
   }
+  /**
+   * Get the next node.
+   *
+   * @return {YXmlElement} The next node.
+   */
   next () {
     let n = this._currentNode
     if (this._firstCall) {
@@ -84,6 +107,11 @@ class YXmlTreeWalker {
   }
 }
 
+/**
+ * Represents a list of {@link YXmlElement}.
+ * A YxmlFragment does not have a nodeName and it does not have attributes.
+ * Therefore it also must not be added as a childElement.
+ */
 export default class YXmlFragment extends YArray {
   constructor () {
     super()
@@ -110,18 +138,31 @@ export default class YXmlFragment extends YArray {
       }
     }
   }
+
+  /**
+   * Create a subtree of childNodes.
+   *
+   * @param {Function} filter Function that is called on each child element and
+   *                          returns a Boolean indicating whether the child
+   *                          is to be included in the subtree.
+   * @return {TreeWalker} A subtree and a position within it.
+   */
   createTreeWalker (filter) {
     return new YXmlTreeWalker(this, filter)
   }
+
   /**
-   * Retrieve first element that matches *query*
-   * Similar to DOM's querySelector, but only accepts a subset of its queries
+   * Returns the first YXmlElement that matches the query.
+   * Similar to DOM's {@link querySelector}.
    *
    * Query support:
    *   - tagname
    * TODO:
    *   - id
    *   - attribute
+   *
+   * @param {CSS_Selector} query The query on the children.
+   * @return {?YXmlElement} The first element that matches the query or null.
    */
   querySelector (query) {
     query = query.toUpperCase()
@@ -133,16 +174,52 @@ export default class YXmlFragment extends YArray {
       return next.value
     }
   }
+
+  /**
+   * Returns all YXmlElements that match the query.
+   * Similar to Dom's {@link querySelectorAll}.
+   *
+   * TODO: Does not yet support all queries. Currently only query by tagName.
+   *
+   * @param {CSS_Selector} query The query on the children
+   * @return {Array<YXmlElement>} The elements that match this query.
+   */
   querySelectorAll (query) {
     query = query.toUpperCase()
     return Array.from(new YXmlTreeWalker(this, element => element.nodeName === query))
   }
+
+  /**
+   * Enables the smart scrolling functionality for a Dom Binding.
+   * This is useful when YXml is bound to a shared editor. When activated,
+   * the viewport will be changed to accommodate remote changes.
+   *
+   * @TODO: Disabled for now.
+   *
+   * @param {Element} scrollElement The node that is
+   */
   enableSmartScrolling (scrollElement) {
     this._scrollElement = scrollElement
     this.forEach(xml => {
       xml.enableSmartScrolling(scrollElement)
     })
   }
+
+  /**
+   * Dom filter function.
+   *
+   * @callback domFilter
+   * @param {string} nodeName The nodeName of the element
+   * @param {Map} attributes The map of attributes.
+   * @return {boolean} Whether to include the Dom node in the YXmlElement.
+   */
+
+  /**
+   * Filter out Dom elements.
+   *
+   * @param {domFilter} f The filtering function that decides whether to include
+   *                      a Dom node.
+   */
   setDomFilter (f) {
     this._domFilter = f
     let attributes = new Map()
@@ -168,16 +245,41 @@ export default class YXmlFragment extends YArray {
       })
     })
   }
+
+  /**
+   * @private
+   * Creates YArray Event and calls observers.
+   */
   _callObserver (transaction, parentSubs, remote) {
     this._callEventHandler(transaction, new YXmlEvent(this, parentSubs, remote))
   }
+
+  /**
+   * Get the string representation of all the children of this YXmlFragment.
+   *
+   * @return {string} The string representation of all children.
+   */
   toString () {
     return this.map(xml => xml.toString()).join('')
   }
+
+  /**
+   * @private
+   * Unbind from Dom and mark this Item as deleted.
+   *
+   * @param {Y} y The Yjs instance
+   * @param {boolean} createDelete Whether to propagate a message that this
+   *                               Type was deleted.
+   */
   _delete (y, createDelete) {
     this._unbindFromDom()
     super._delete(y, createDelete)
   }
+
+  /**
+   * @private
+   * Unbind this YXmlFragment from the Dom.
+   */
   _unbindFromDom () {
     if (this._domObserver != null) {
       this._domObserver.disconnect()
@@ -191,19 +293,53 @@ export default class YXmlFragment extends YArray {
       this._y.off('beforeTransaction', this._beforeTransactionHandler)
     }
   }
+
+  /**
+   * Insert Dom Elements after one of the children of this YXmlFragment.
+   * The Dom elements will be bound to a new YXmlElement and inserted at the
+   * specified position.
+   *
+   * @param {YXmlElement|null} prev The reference node. New YxmlElements are
+   *                           inserted after this node. Set null to insert at
+   *                           the beginning.
+   * @param {Array<Element>} doms The Dom elements to insert.
+   * @return {Array<YXmlElement>} The YxmlElements that are inserted.
+   */
   insertDomElementsAfter (prev, doms, _document) {
     const types = domToYXml(this, doms, _document)
     this.insertAfter(prev, types)
     return types
   }
-  insertDomElements (pos, doms, _document) {
+
+  /**
+   * Insert Dom Elements at a specified index.
+   * The Dom elements will be bound to a new YXmlElement and inserted at the
+   * specified position.
+   *
+   * @param {Integer} index The position to insert elements at.
+   * @param {Array<Element>} doms The Dom elements to insert.
+   * @return {Array<YXmlElement>} The YxmlElements that are inserted.
+   */
+  insertDomElements (index, doms, _document) {
     const types = domToYXml(this, doms, _document)
-    this.insert(pos, types)
+    this.insert(index, types)
     return types
   }
+
+  /**
+   * Get the Dom representation of this YXml type..
+   */
   getDom () {
     return this._dom
   }
+
+  /**
+   * Bind this YXmlFragment and all its children to a Dom Element.
+   * The content of the Dom Element are replaced with the Dom representation of
+   * the children of this YXml Type.
+   *
+   * @param {Element} dom The Dom Element that should be bound to this Type.
+   */
   bindToDom (dom, _document) {
     if (this._dom != null) {
       this._unbindFromDom()
@@ -217,8 +353,12 @@ export default class YXmlFragment extends YArray {
     })
     this._bindToDom(dom, _document)
   }
-  // binds to a dom element
-  // Only call if dom and YXml are isomorph
+
+  /**
+   * @private
+   * Binds to a dom element.
+   * Only call if dom and YXml are isomorph
+   */
   _bindToDom (dom, _document) {
     _document = _document || document
     this._dom = dom
@@ -346,6 +486,12 @@ export default class YXmlFragment extends YArray {
     }
     return dom
   }
+
+  /**
+   * @private
+   * Transform this YXml Type to a readable format.
+   * Useful for logging as all Items implement this method.
+   */
   _logString () {
     const left = this._left !== null ? this._left._lastId : null
     const origin = this._origin !== null ? this._origin._lastId : null
diff --git a/src/Type/y-xml/YXmlHook.js b/src/Type/y-xml/YXmlHook.js
index ee2ce4f7..a5834ab2 100644
--- a/src/Type/y-xml/YXmlHook.js
+++ b/src/Type/y-xml/YXmlHook.js
@@ -1,6 +1,11 @@
 import YMap from '../YMap.js'
 import { getHook, addHook } from './hooks.js'
 
+/**
+ * You can manage binding to a custom type with YXmlHook.
+ *
+ * @param {String} hookName nodeName of the Dom Node.
+ */
 export default class YXmlHook extends YMap {
   constructor (hookName, dom) {
     super()
@@ -14,11 +19,20 @@ export default class YXmlHook extends YMap {
       getHook(hookName).fillType(dom, this)
     }
   }
+
+  /**
+   * @private
+   * Creates an Item with the same effect as this Item (without position effect)
+   */
   _copy () {
     const struct = super._copy()
     struct.hookName = this.hookName
     return struct
   }
+
+  /**
+   * Returns the Dom representation of this YXmlHook.
+   */
   getDom (_document) {
     _document = _document || document
     if (this._dom === null) {
@@ -29,20 +43,56 @@ export default class YXmlHook extends YMap {
     }
     return this._dom
   }
+
+  /**
+   * @private
+   * Removes the Dom binding.
+   */
   _unbindFromDom () {
     this._dom._yxml = null
     this._yxml = null
     // TODO: cleanup hook?
   }
+
+  /**
+   * @private
+   * Read the next Item in a Decoder and fill this Item with the read data.
+   *
+   * This is called when data is received from a remote peer.
+   *
+   * @param {Y} y The Yjs instance that this Item belongs to.
+   * @param {BinaryDecoder} decoder The decoder object to read data from.
+   */
   _fromBinary (y, decoder) {
     const missing = super._fromBinary(y, decoder)
     this.hookName = decoder.readVarString()
     return missing
   }
+
+  /**
+   * @private
+   * Transform the properties of this type to binary and write it to an
+   * BinaryEncoder.
+   *
+   * This is called when this Item is sent to a remote peer.
+   *
+   * @param {BinaryEncoder} encoder The encoder to write data to.
+   */
   _toBinary (encoder) {
     super._toBinary(encoder)
     encoder.writeVarString(this.hookName)
   }
+
+  /**
+   * @private
+   * Integrate this type into the Yjs instance.
+   *
+   * * Save this struct in the os
+   * * This type is sent to other client
+   * * Observer functions are fired
+   *
+   * @param {Y} y The Yjs instance
+   */
   _integrate (y) {
     if (this.hookName === null) {
       throw new Error('hookName must be defined!')
diff --git a/src/Type/y-xml/YXmlText.js b/src/Type/y-xml/YXmlText.js
index 7fbd48d5..0e4eb78c 100644
--- a/src/Type/y-xml/YXmlText.js
+++ b/src/Type/y-xml/YXmlText.js
@@ -1,5 +1,11 @@
 import YText from '../YText.js'
 
+/**
+ * Represents text in a Dom Element. In the future this type will also handle
+ * simple formatting information like bold and italic.
+ *
+ * @param {String} arg1 Initial value.
+ */
 export default class YXmlText extends YText {
   constructor (arg1) {
     let dom = null
@@ -56,6 +62,15 @@ export default class YXmlText extends YText {
   enableSmartScrolling (scrollElement) {
     this._scrollElement = scrollElement
   }
+
+  /**
+   * @private
+   * Set Dom element / Text Node that represents the same content as this
+   * YXmlElement.
+   *
+   * @param {Element} dom The Dom Element / Text Node that is set to be
+   *                      equivalent to this Type.
+   */
   _setDom (dom) {
     if (this._dom != null) {
       this._unbindFromDom()
@@ -67,6 +82,10 @@ export default class YXmlText extends YText {
     this._dom = dom
     dom._yxml = this
   }
+
+  /**
+   * Returns the Dom representation of this YXmlText.
+   */
   getDom (_document) {
     _document = _document || document
     if (this._dom === null) {
@@ -76,10 +95,24 @@ export default class YXmlText extends YText {
     }
     return this._dom
   }
+
+  /**
+   * @private
+   * Mark this Item as deleted.
+   *
+   * @param {Y} y The Yjs instance
+   * @param {boolean} createDelete Whether to propagate a message that this
+   *                               Type was deleted.
+   */
   _delete (y, createDelete) {
     this._unbindFromDom()
     super._delete(y, createDelete)
   }
+
+  /**
+   * @private
+   * Unbind this YXmlText from the Dom.
+   */
   _unbindFromDom () {
     if (this._domObserver != null) {
       this._domObserver.disconnect()
diff --git a/src/Type/y-xml/utils.js b/src/Type/y-xml/utils.js
index 0e1b23d0..0f30647c 100644
--- a/src/Type/y-xml/utils.js
+++ b/src/Type/y-xml/utils.js
@@ -184,8 +184,8 @@ export function reflectChangesOnDom (events, _document) {
               dom.setAttribute(attributeName, value)
             }
           })
-          /**
-           * TODO: instead of chard-checking the types, it would be best to
+          /*
+           * TODO: instead of hard-checking the types, it would be best to
            *       specify the type's features. E.g.
            *         - _yxmlHasAttributes
            *         - _yxmlHasChildren
diff --git a/src/Util/EventHandler.js b/src/Util/EventHandler.js
index ab3dbe4c..c82c0f46 100644
--- a/src/Util/EventHandler.js
+++ b/src/Util/EventHandler.js
@@ -1,22 +1,56 @@
 
+/**
+ * General event handler implementation.
+ */
 export default class EventHandler {
   constructor () {
     this.eventListeners = []
   }
+
+  /**
+   * To prevent memory leaks, call this method when the eventListeners won't be
+   * used anymore.
+   */
   destroy () {
     this.eventListeners = null
   }
+
+  /**
+   * Adds an event listener that is called when
+   * {@link EventHandler#callEventListeners} is called.
+   *
+   * @param {Function} f The event handler.
+   */
   addEventListener (f) {
     this.eventListeners.push(f)
   }
+
+  /**
+   * Removes an event listener.
+   *
+   * @param {Function} f The event handler that was added with
+   *                     {@link EventHandler#addEventListener}
+   */
   removeEventListener (f) {
     this.eventListeners = this.eventListeners.filter(function (g) {
       return f !== g
     })
   }
+
+  /**
+   * Removes all event listeners.
+   */
   removeAllEventListeners () {
     this.eventListeners = []
   }
+
+  /**
+   * Call all event listeners that were added via
+   * {@link EventHandler#addEventListener}.
+   *
+   * @param {Transaction} transaction The transaction object // TODO: do we need this?
+   * @param {YEvent} event An event object that describes the change on a type.
+   */
   callEventListeners (transaction, event) {
     for (var i = 0; i < this.eventListeners.length; i++) {
       try {
diff --git a/src/Util/NamedEventHandler.js b/src/Util/NamedEventHandler.js
index 632d8321..8eee778c 100644
--- a/src/Util/NamedEventHandler.js
+++ b/src/Util/NamedEventHandler.js
@@ -1,8 +1,19 @@
+
+/**
+ * Handles named events.
+ */
 export default class NamedEventHandler {
   constructor () {
     this._eventListener = new Map()
     this._stateListener = new Map()
   }
+
+  /**
+   * @private
+   * Returns all listeners that listen to a specified name.
+   *
+   * @param {String} name The query event name.
+   */
   _getListener (name) {
     let listeners = this._eventListener.get(name)
     if (listeners === undefined) {
@@ -14,14 +25,34 @@ export default class NamedEventHandler {
     }
     return listeners
   }
+
+  /**
+   * Adds a named event listener. The listener is removed after it has been
+   * called once.
+   *
+   * @param {String} name The event name to listen to.
+   * @param {Function} f The function that is executed when the event is fired.
+   */
   once (name, f) {
     let listeners = this._getListener(name)
     listeners.once.add(f)
   }
+
+  /**
+   * Adds a named event listener.
+   *
+   * @param {String} name The event name to listen to.
+   * @param {Function} f The function that is executed when the event is fired.
+   */
   on (name, f) {
     let listeners = this._getListener(name)
     listeners.on.add(f)
   }
+
+  /**
+   * @private
+   * Init the saved state for an event name.
+   */
   _initStateListener (name) {
     let state = this._stateListener.get(name)
     if (state === undefined) {
@@ -33,9 +64,20 @@ export default class NamedEventHandler {
     }
     return state
   }
+
+  /**
+   * Returns a Promise that is resolved when the event name is called.
+   * The Promise is immediately resolved when the event name was called in the
+   * past.
+   */
   when (name) {
     return this._initStateListener(name).promise
   }
+
+  /**
+   * Remove an event listener that was registered with either
+   * {@link EventHandler#on} or {@link EventHandler#once}.
+   */
   off (name, f) {
     if (name == null || f == null) {
       throw new Error('You must specify event name and function!')
@@ -46,6 +88,14 @@ export default class NamedEventHandler {
       listener.once.delete(f)
     }
   }
+
+  /**
+   * Emit a named event. All registered event listeners that listen to the
+   * specified name will receive the event.
+   *
+   * @param {String} name The event name.
+   * @param {Array} args The arguments that are applied to the event listener.
+   */
   emit (name, ...args) {
     this._initStateListener(name).resolve()
     const listener = this._eventListener.get(name)
diff --git a/src/Util/UndoManager.js b/src/Util/UndoManager.js
index c18c36d3..963b45d5 100644
--- a/src/Util/UndoManager.js
+++ b/src/Util/UndoManager.js
@@ -64,7 +64,15 @@ function applyReverseOperation (y, scope, reverseBuffer) {
   return performedUndo
 }
 
+/**
+ * Saves a history of locally applied operations. The UndoManager handles the
+ * undoing and redoing of locally created changes.
+ */
 export default class UndoManager {
+  /**
+   * @param {YType} scope The scope on which to listen for changes.
+   * @param {Object} options Optionally provided configuration.
+   */
   constructor (scope, options = {}) {
     this.options = options
     options.captureTimeout = options.captureTimeout == null ? 500 : options.captureTimeout
@@ -101,12 +109,20 @@ export default class UndoManager {
       }
     })
   }
+
+  /**
+   * Undo the last locally created change.
+   */
   undo () {
     this._undoing = true
     const performedUndo = applyReverseOperation(this.y, this._scope, this._undoBuffer)
     this._undoing = false
     return performedUndo
   }
+
+  /**
+   * Redo the last locally created change.
+   */
   redo () {
     this._redoing = true
     const performedRedo = applyReverseOperation(this.y, this._scope, this._redoBuffer)
diff --git a/src/Util/YEvent.js b/src/Util/YEvent.js
index aed8c4e8..1af22be4 100644
--- a/src/Util/YEvent.js
+++ b/src/Util/YEvent.js
@@ -1,9 +1,27 @@
 
+/**
+ * YEvent describes the changes on a YType.
+ */
 export default class YEvent {
+  /**
+   * @param {YType} target The changed type.
+   */
   constructor (target) {
     this.target = target
     this.currentTarget = target
   }
+
+  /**
+   * Computes the path from `y` to the changed type.
+   *
+   * The following property holds:
+   * @example
+   *   let type = y
+   *   event.path.forEach(function (dir) {
+   *     type = type.get(dir)
+   *   })
+   *   type === event.target // => true
+   */
   get path () {
     const path = []
     let type = this.target
diff --git a/src/Util/relativePosition.js b/src/Util/relativePosition.js
index 77118b7f..cd824b67 100644
--- a/src/Util/relativePosition.js
+++ b/src/Util/relativePosition.js
@@ -1,7 +1,43 @@
 import ID from './ID.js'
 import RootID from './RootID.js'
 
+/**
+ * A relative position that is based on the Yjs model. In contrast to an
+ * absolute position (position by index), the relative position can be
+ * recomputed when remote changes are received. For example:
+ *
+ * ```Insert(0, 'x')('a|bc') = 'xa|bc'``` Where | is the cursor position.
+ *
+ * A relative cursor position can be obtained with the function
+ * {@link getRelativePosition} and it can be transformed to an absolute position
+ * with {@link fromRelativePosition}.
+ *
+ * Pro tip: Use this to implement shared cursor locations in YText or YXml!
+ * The relative position is {@link encodable}, so you can send it to other
+ * clients.
+ *
+ * @example
+ * // Current cursor position is at position 10
+ * let relativePosition = getRelativePosition(yText, 10)
+ * // modify yText
+ * yText.insert(0, 'abc')
+ * yText.delete(3, 10)
+ * // Compute the cursor position
+ * let absolutePosition = fromRelativePosition(y, relativePosition)
+ * absolutePosition.type // => yText
+ * console.log('cursor location is ' + absolutePosition.offset) // => cursor location is 3
+ *
+ * @typedef {encodable} RelativePosition
+ */
+
+/**
+ * Create a relativePosition based on a absolute position.
+ *
+ * @param {YType} type The base type (e.g. YText or YArray).
+ * @param {Integer} offset The absolute position.
+ */
 export function getRelativePosition (type, offset) {
+  // TODO: rename to createRelativePosition
   let t = type._start
   while (t !== null) {
     if (t._deleted === false) {
@@ -15,6 +51,20 @@ export function getRelativePosition (type, offset) {
   return ['endof', type._id.user, type._id.clock || null, type._id.name || null, type._id.type || null]
 }
 
+/**
+ * @typedef {Object} AbsolutePosition The result of {@link fromRelativePosition}
+ * @property {YType} type The type on which to apply the absolute position.
+ * @property {Integer} offset The absolute offset.r
+ */
+
+/**
+ * Transforms a relative position back to a relative position.
+ *
+ * @param {Y} y The Yjs instance in which to query for the absolute position.
+ * @param {RelativePosition} rpos The relative position.
+ * @return {AbsolutePosition} The absolute position in the Yjs model
+ *                            (type + offset).
+ */
 export function fromRelativePosition (y, rpos) {
   if (rpos[0] === 'endof') {
     let id
diff --git a/src/Y.js b/src/Y.js
index fd29a6e9..55ff5cdc 100644
--- a/src/Y.js
+++ b/src/Y.js
@@ -27,9 +27,32 @@ import QuillBinding from './Binding/QuillBinding.js'
 
 import { toBinary, fromBinary } from './MessageHandler/binaryEncode.js'
 
+/**
+ * Anything that can be encoded with `JSON.stringify` and can be decoded with
+ * `JSON.parse`.
+ *
+ * The following property should hold:
+ * `JSON.parse(JSON.stringify(key))===key`
+ *
+ * At the moment the only safe values are number and string.
+ *
+ * @typedef {(number|string)} encodable
+ */
+
+/**
+ * A Yjs instance handles the state of shared data.
+ *
+ * @param {string} room Users in the same room share the same content
+ * @param {Object} opts Connector definition
+ * @param {AbstractPersistence} persistence Persistence adapter instance
+ */
 export default class Y extends NamedEventHandler {
   constructor (room, opts, persistence) {
     super()
+    /**
+     * The room name that this Yjs instance connects to.
+     * @type {String}
+     */
     this.room = room
     if (opts != null) {
       opts.connector.room = room
@@ -37,6 +60,7 @@ export default class Y extends NamedEventHandler {
     this._contentReady = false
     this._opts = opts
     this.userID = generateUserID()
+    // TODO: This should be a Map so we can use encodables as keys
     this.share = {}
     this.ds = new DeleteStore(this)
     this.os = new OperationStore(this)
@@ -44,6 +68,10 @@ export default class Y extends NamedEventHandler {
     this._missingStructs = new Map()
     this._readyToIntegrate = []
     this._transaction = null
+    /**
+     * The {@link AbstractConnector}.that is used by this Yjs instance.
+     * @type {AbstractConnector}
+     */
     this.connector = null
     this.connected = false
     let initConnection = () => {
@@ -53,11 +81,15 @@ export default class Y extends NamedEventHandler {
         this.emit('connectorReady')
       }
     }
+    /**
+     * The {@link AbstractPersistence} that is used by this Yjs instance.
+     * @type {AbstractPersistence}
+     */
+    this.persistence = null
     if (persistence != null) {
       this.persistence = persistence
       persistence._init(this).then(initConnection)
     } else {
-      this.persistence = null
       initConnection()
     }
   }
@@ -77,6 +109,14 @@ export default class Y extends NamedEventHandler {
     }
   }
   _beforeChange () {}
+  /**
+   * Changes that happen inside of a transaction are bundled. This means that
+   * the observer fires _after_ the transaction is finished and that all changes
+   * that happened inside of the transaction are sent as one message to the
+   * other peers.
+   *
+   * @param {Function} f The function that should be executed as a transaction
+   */
   transact (f, remote = false) {
     let initialCall = this._transaction === null
     if (initialCall) {
@@ -117,13 +157,55 @@ export default class Y extends NamedEventHandler {
       this.emit('afterTransaction', this, transaction, remote)
     }
   }
-  // fake _start for root properties (y.set('name', type))
+
+  /**
+   * @private
+   * Fake _start for root properties (y.set('name', type))
+   */
   get _start () {
     return null
   }
+
+  /**
+   * @private
+   * Fake _start for root properties (y.set('name', type))
+   */
   set _start (start) {
     return null
   }
+
+  /**
+   * Define a shared data type.
+   *
+   * Multiple calls of `y.define(name, TypeConstructor)` yield the same result
+   * and do not overwrite each other. I.e.
+   * `y.define(name, type) === y.define(name, type)`
+   *
+   * After this method is called, the type is also available on `y.share[name]`.
+   *
+   * *Best Practices:*
+   * Either define all types right after the Yjs instance is created or always
+   * use `y.define(..)` when accessing a type.
+   *
+   * @example
+   *   // Option 1
+   *   const y = new Y(..)
+   *   y.define('myArray', YArray)
+   *   y.define('myMap', YMap)
+   *   // .. when accessing the type use y.share[name]
+   *   y.share.myArray.insert(..)
+   *   y.share.myMap.set(..)
+   *
+   *   // Option2
+   *   const y = new Y(..)
+   *   // .. when accessing the type use `y.define(..)`
+   *   y.define('myArray', YArray).insert(..)
+   *   y.define('myMap', YMap).set(..)
+   *
+   * @param {String} name
+   * @param {YType Constructor} TypeConstructor The constructor of the type definition
+   * @returns {YType} The created type
+   */
   define (name, TypeConstructor) {
     let id = new RootID(name, TypeConstructor)
     let type = this.os.get(id)
@@ -134,9 +216,23 @@ export default class Y extends NamedEventHandler {
     }
     return type
   }
+
+  /**
+   * Get a defined type. The type must be defined locally. First define the
+   * type with {@link define}.
+   *
+   * This returns the same value as `y.share[name]`
+   *
+   * @param {String} name The typename
+   */
   get (name) {
     return this.share[name]
   }
+
+  /**
+   * Disconnect this Yjs Instance from the network. The connector will
+   * unsubscribe from the room and document updates are not shared anymore.
+   */
   disconnect () {
     if (this.connected) {
       this.connected = false
@@ -145,6 +241,10 @@ export default class Y extends NamedEventHandler {
       return Promise.resolve()
     }
   }
+
+  /**
+   * If disconnected, tell the connector to reconnect to the room.
+   */
   reconnect () {
     if (!this.connected) {
       this.connected = true
@@ -153,6 +253,11 @@ export default class Y extends NamedEventHandler {
       return Promise.resolve()
     }
   }
+
+  /**
+   * Disconnect from the room, and destroy all traces of this Yjs instance.
+   * Persisted data will remain until removed by the persistence adapter.
+   */
   destroy () {
     super.destroy()
     this.share = null
@@ -171,7 +276,9 @@ export default class Y extends NamedEventHandler {
     this.ds = null
     this.ss = null
   }
+
   whenSynced () {
+    // TODO: remove this method
     return new Promise(resolve => {
       this.once('synced', () => {
         resolve()