Argument can be true/false, or one of UNDERLINE_NONE,
UNDERLINE_SINGLE or UNDERLINE_DOUBLE.
public setUnderline ( integer $underline = Printer::UNDERLINE_SINGLE ) | ||
$underline | integer | Either true/false, or one of Printer::UNDERLINE_NONE, Printer::UNDERLINE_SINGLE or Printer::UNDERLINE_DOUBLE. Defaults to Printer::UNDERLINE_SINGLE. |