move some pages

docs/src/data/posts/commands.md

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+# Commands

docs/src/data/posts/editor.md

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+# Editor
+
+This class is a central building block of tiptap. It does most of the heavy lifting of creating a working  [ProseMirror](https://ProseMirror.net/) editor such as creating the [`EditorView`](https://ProseMirror.net/docs/ref/#view.EditorView), setting the initial [`EditorState`](https://ProseMirror.net/docs/ref/#state.Editor_State) and so on.
+
+Although tiptap tries to hide most of the complexity of [ProseMirror](https://ProseMirror.net/docs/), tiptap is built on top of its APIs and we strongly recommend you to read through the [ProseMirror Guide](https://ProseMirror.net/docs/guide/). You'll have a better understanding of how everything works under the hood and get familiar with many terms and jargon used by tiptap.

docs/src/data/posts/events.md

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+# Events

docs/src/data/posts/extensions.md

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+# Extensions

docs/src/data/posts/installation.md

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-# Install
+# Installation
 
 ```bash
 # Using npm

docs/src/data/posts/renderless.md

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+# Renderless
+
+tiptap comes without any CSS.