set_accept_label
Description:
Sets the custom label text for the accept button.
If characters in label are preceded by an underscore, they are underlined. If you need a literal underscore character in a label,
use “__” (two underscores). The first underlined character represents a keyboard accelerator called a mnemonic. Pressing Alt and that key
activates the button.
Parameters:
| this |
a |
| accept_label |
custom label or null for the default |