diff --git a/packages/tiptap-core/index.ts b/packages/tiptap-core/index.ts
index b1b8bdb7..67b83709 100644
--- a/packages/tiptap-core/index.ts
+++ b/packages/tiptap-core/index.ts
@@ -1,3 +1,5 @@
 import { Editor } from './src/Editor'
 
-export default Editor
\ No newline at end of file
+export default Editor
+export { default as Extension } from './src/Extension'
+export { default as Node } from './src/Node'
\ No newline at end of file
diff --git a/packages/tiptap-core/src/Editor.ts b/packages/tiptap-core/src/Editor.ts
index fa2b0987..e907303c 100644
--- a/packages/tiptap-core/src/Editor.ts
+++ b/packages/tiptap-core/src/Editor.ts
@@ -12,11 +12,13 @@ import insertText from './commands/insertText'
 import insertHTML from './commands/insertHTML'
 import focus from './commands/focus'
 
+type EditorContent = string | JSON
+
 interface EditorOptions {
   element: Node
-  content: string
+  content: EditorContent
 }
-  
+
 export class Editor {
 
   private lastCommand = Promise.resolve()
@@ -84,7 +86,7 @@ export class Editor {
     return this[name](...args)
   }
 
-  private createDocument(content: any): any {
+  private createDocument(content: EditorContent): any {
     // if (content === null) {
     //   return this.schema.nodeFromJSON(this.options.emptyDocument)
     // }
diff --git a/packages/tiptap-core/src/Extension.ts b/packages/tiptap-core/src/Extension.ts
new file mode 100644
index 00000000..99e7cfbe
--- /dev/null
+++ b/packages/tiptap-core/src/Extension.ts
@@ -0,0 +1,52 @@
+import { Editor } from './Editor'
+
+export default class Extension {
+
+  editor: any
+  options: { [key: string]: any } = {}
+  defaultOptions: { [key: string]: any } = {}
+
+  constructor(options = {}) {
+    this.options = {
+      ...this.defaultOptions,
+      ...options,
+    }
+  }
+
+  init(): any {
+    return null
+  }
+
+  bindEditor(editor: Editor): void {
+    this.editor = editor
+  }
+
+  get name(): any {
+    return null
+  }
+
+  get type(): any {
+    return 'extension'
+  }
+
+  get update(): any {
+    return () => {}
+  }
+
+  get plugins(): any {
+    return []
+  }
+
+  inputRules(): any {
+    return []
+  }
+
+  pasteRules(): any {
+    return []
+  }
+
+  keys(): any {
+    return {}
+  }
+
+}
diff --git a/packages/tiptap-core/src/Node.ts b/packages/tiptap-core/src/Node.ts
new file mode 100644
index 00000000..c9bcb915
--- /dev/null
+++ b/packages/tiptap-core/src/Node.ts
@@ -0,0 +1,27 @@
+import Extension from './Extension'
+
+export default class Node extends Extension {
+
+  constructor(options = {}) {
+    super(options)
+  }
+
+  // protected type = 'node'
+
+  get type() {
+    return 'node'
+  }
+
+  get view(): any {
+    return null
+  }
+
+  get schema(): any {
+    return null
+  }
+
+  command() {
+    return () => {}
+  }
+
+}
diff --git a/packages/tiptap-core/src/commands/focus.ts b/packages/tiptap-core/src/commands/focus.ts
index 28931482..7c3de881 100644
--- a/packages/tiptap-core/src/commands/focus.ts
+++ b/packages/tiptap-core/src/commands/focus.ts
@@ -5,7 +5,7 @@ import minMax from '../utils/minMax'
 
 declare module '../Editor' {
   interface Editor {
-    focus(position: any): Editor
+    focus(position: Position): Editor
   }
 }
 
diff --git a/packages/tiptap-document-extension/index.ts b/packages/tiptap-document-extension/index.ts
new file mode 100644
index 00000000..7666d574
--- /dev/null
+++ b/packages/tiptap-document-extension/index.ts
@@ -0,0 +1,23 @@
+import { Node } from '@tiptap/core'
+
+export default class Document extends Node {
+
+  // get name() {
+  //   return 'document'
+  // }
+
+  // get schema() {
+  //   return {
+  //     content: 'block+',
+  //   }
+  // }
+
+  // type = 'nope'
+
+  name = 'document'
+
+  schema = {
+    content: 'block+',
+  }
+
+}
\ No newline at end of file
diff --git a/src/templates/Post.vue b/src/templates/Post.vue
index 72a9b5f1..99d0f231 100644
--- a/src/templates/Post.vue
+++ b/src/templates/Post.vue
@@ -41,10 +41,24 @@ export default {
       //   console.log(html)
       //   next()
       // })
-      .focus('start')
-      .insertText('<p>start</p>')
-      .focus('end')
-      .insertHTML('<p>end</p>')
+      // .registerCommand('insertHello', async (next, editor) => {
+      //   await editor.insertHTML('<strong>HELLO</strong>')
+      //   next()
+      // })
+      // .registerCommand('insertHello', (next, editor) => {
+      //   editor
+      //     .focus('start')
+      //     .insertHTML('<strong>HELLO</strong>')
+      //   next()
+      // })
+      // .focus('start')
+      // .insertHello()
+      // .insertText('eins')
+      // .insertText('zwei')
+      // .insertText('drei')
+      // .insertHello()
+      // .focus('end')
+      // .insertHTML('<p>end</p>')
   }
 }
 </script>
\ No newline at end of file