# BOX_LINES_HEAVY

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_heavy/

```c
BOX_LINES_HEAVY
```

## Referenced by

- [`screen_write_box_border_set`](/en/tmux/3.7c/reference/c-function-screen-write-c-screen_write_box_border_set/) (function)