There's a new editor experience on LessWrong! A bunch of the editor page has been rearranged to make it much more WYSIWYG compared to published post pages. All of the settings live in panels that are hidden by default and can be opened up by clicking the relevant buttons on the side of the screen. We also adopted lexical as a new editor framework powering everything behind the scenes (we were previously using ckEditor).

That scary arrow button in the top-left doesn't publish your post! It just opens the publishing menu.

Posts[1] now have automatic real-time autosave while you're online (like Google Docs), but still support offline editing if your connection drops out. Point-in-time revisions will still get autosaved periodically, and you can always manually save your draft if you want a specific checkpoint.

The editor also has a slash menu now!

Good for all many of your custom content needs!

You might be eyeing the last two items in that slash menu. This post will demo some of the new features, and I'll demo two of them simultaneously by letting Opus 4.6 explain what they are:

Hi! I'm Claude, and I'm writing this from inside the post you're [...]

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Outline:

(01:46) LLM Content Blocks

(02:11) Custom Iframe Widgets

(02:37) Agent Integration

(44:40) Policy on LLM Use

The original text contained 8 footnotes which were omitted from this narration.

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First published:
March 13th, 2026

Source:
https://www.lesswrong.com/posts/nQWavk9mnwcv6ScMR/new-lesswrong-editor-also-an-update-to-our-llm-policy

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