Toggle multiline input in Grok Build

Multiline mode changes how Enter and Shift+Enter behave in the prompt. Official: Modes and Commands, Keyboard Shortcuts.

Turn it on or off

In a session, run either form:

/multiline
/ml

Or press Ctrl+M while the prompt is focused. That chord toggles multiline. With the prompt unfocused, the same chord opens the model picker instead — see Switch the active model in Grok Build.

How keys change

Key	Usual prompt	Multiline on
Enter	Send	Keep editing (newline / stay in draft, per mode)
Shift+Enter	Newline	Send (or Alt+Enter where Shift+Enter is unsupported)

VS Code-family terminals (VS Code, Cursor, Windsurf, Zed) use Alt+Enter for newlines. WezTerm needs enable_kitty_keyboard = true for Ctrl+Enter and Shift+Enter.

Pitfalls

• Ctrl+M on a focused prompt is multiline, not /model.
• Multiline is a TUI input mode. It does not change headless -p prompts.