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title: "The terminal" sidebar_position: 1

The terminal

012 uses what the terminal it runs in can do, and degrades quietly where it can't: charts as images or text, links, the clipboard, the mouse, colors that follow light and dark. Pipelines and nushell notebooks have a section of their own: Nushell.

Page	For
Themes	Your terminal's colors, a built-in scheme, or your own
Serving over SSH	012 serve: a 012 per session, on one directory

Terminal features 012 uses

Feature	What for	Where it works
Kitty keyboard protocol	telling apart keys like Ctrl+I and Tab, Shift+Enter, and keys held to preview (Keys)	kitty, Ghostty, WezTerm, foot, Alacritty, iTerm2
Mouse, all motion	hover highlights, drag, resize	most terminals
Pointer shape (OSC 22)	resize and text cursors over the grid	Ghostty, kitty, foot, xterm
Kitty graphics	chart images	kitty, Ghostty, WezTerm
Sixel graphics (DA1 attribute 4, XTSMGRAPHICS)	chart images where kitty graphics aren't, outside tmux: Charts	foot, xterm, mlterm, Windows Terminal
Hyperlinks (OSC 8)	links in cells	most modern terminals
Clipboard (OSC 52)	copying ranges	most terminals; tmux needs set-clipboard on
Progress (OSC 9;4)	JEV and import progress in the tab	Ghostty, Windows Terminal, iTerm2
Notifications (OSC 9)	when JEV or an import finishes in the background	iTerm2, Ghostty, WezTerm
Curly, colored underlines	error cells	kitty, Ghostty, WezTerm, iTerm2, Alacritty
Background color query and mode 2031	light and dark themes, following system changes	most terminals; 2031 in Ghostty and kitty
Synchronized output (2026)	flicker-free redraws	kitty, Ghostty, WezTerm, iTerm2, Alacritty