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Code blocks keep formatting, get line numbers and a copy button.
- Click + in the composer and pick "Code block" for the editor with 18 languages.
- Or type ``` followed by a language, then your code, then ``` again.
- Pasting something that looks like code wraps it automatically and guesses the language.
- Wrap a word in backticks for inline code.
Tip. Blocks longer than 20 lines collapse, with a button to expand.
Updated Sep 25, 2026