# VISUAL_ON

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L129
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-define-tmux-h-visual_on/

```c
#define VISUAL_ON 1
```