# ARGS_ENTRY_OPTIONAL_VALUE

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/arguments.c#L42
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-arguments-c-args_entry_optional_value/

```c
#define ARGS_ENTRY_OPTIONAL_VALUE 0x1
```

## Referenced by

- [`args_parse_flag_argument`](/en/tmux/latest/reference/c-function-arguments-c-args_parse_flag_argument/) (function)
- [`args_print`](/en/tmux/latest/reference/c-function-args_print/) (function)