Access: Read Write
Type: boolean

Whether or not the label contains an underline for a mnemonic. If this property is true any underlines in the label will be treated as mnemonic identifiers. If the property is false any underlines will be shown literally in the label.

If a label contains two underlines and user_underline is true, both underlines will be shown as mnemonics, but only the second underline will work.

Defaults to false.

See also: set_use_underline()