VT Compatibility

Attyx implements a comprehensive set of VT/ANSI escape sequences.

Cursor Movement

Sequence	Description
CSI H / CSI f	Absolute cursor position
CSI A/B/C/D	Relative cursor movement (up/down/right/left)
CSI E	Cursor next line
CSI F	Cursor previous line
CSI G	Cursor column absolute
CSI d	Cursor row absolute
ESC 7 / CSI s	Save cursor position
ESC 8 / CSI u	Restore cursor position

Erase

Sequence	Description
CSI J	Erase display (to end, to start, or all)
CSI K	Erase line (to end, to start, or all)
CSI X	Erase characters

Scrolling

Sequence	Description
CSI r	Set scroll region (DECSTBM)
CSI S	Scroll up
CSI T	Scroll down
ESC D	Index (move down, scroll within region)
ESC M	Reverse index (move up, scroll within region)

Line/Character Editing

Sequence	Description
CSI L	Insert lines
CSI M	Delete lines
CSI @	Insert characters
CSI P	Delete characters

Style (SGR)

Code	Description
0	Reset all attributes
1	Bold
2	Dim
3	Italic
4	Underline
7	Reverse video
9	Strikethrough
30–37, 90–97	Foreground colors (standard + bright)
40–47, 100–107	Background colors (standard + bright)
38;5;N	256-color foreground
48;5;N	256-color background
38;2;R;G;B	24-bit truecolor foreground
48;2;R;G;B	24-bit truecolor background

Modes

Sequence	Description
ESC[?1049h/l	Alternate screen buffer
ESC[?2004h/l	Bracketed paste mode
ESC[?1000h/l	Mouse tracking (X10)
ESC[?1006h/l	SGR mouse encoding
ESC[?2026h/l	Synchronized output
ESC[?25h/l	Cursor visibility

OSC Sequences

Sequence	Description
OSC 0/2	Set terminal title
OSC 8	Hyperlinks (clickable URLs)

Kitty Protocols

Sequence	Description
CSI > N u	Push keyboard flags
CSI < N u	Pop keyboard flags
CSI ? u	Query keyboard flags
APC G	Graphics protocol (images)

Device Queries

Sequence	Description
CSI 5 n	Device status report
CSI 6 n	Cursor position report
CSI c	Primary device attributes (DA1)
CSI > c	Secondary device attributes (DA2)
CSI Ps SP q	Set cursor shape (DECSCUSR)
CSI ?Ps$p	Query DEC private mode (DECRQM)