Appearance
Overline (SGR 53)
ESC [ 53 mSGR 53 draws a line above the text, the mirror image of underline. The sequence is
ESC [ 53 m. Reset with SGR 55. Overline is one of the lesser-used ECMA-48 attributes and was adopted by modern terminals relatively recently. It can be useful for horizontal rules, header decoration, or combined with underline for a boxed text effect.How this is tested: Send
\x1b[53mX, check for overline property on the cell.Analysis2026-03-26
Supported by all 8 tested terminals — universal adoption. Part of the Modern TUI baseline.
Supported by 13 of 13 backends (100%)
Terminal Applications
| Terminal | Version | Support | Notes |
|---|---|---|---|
| iTerm2 | 3.6.9 | ✓ yes | |
| Ghostty | 1.3.1 | ✓ yes | |
| VS Code | 1.112.0 | ✓ yes | |
| Warp | 0.2026.03.18.08.24.03 | ✓ yes | |
| Cursor | 2.6.21 | ✓ yes | |
| tmux | 3.6a | ✓ yes | |
| Kitty | 0.46.2 | ✓ yes | |
| Terminal.app | 2.15 | ✓ yes | |
| GNU Screen | 5.0.1 | ✓ yes |