$this->addOption( 'dwdiff', 'Use dwdiff to display diff output' );
$this->addOption( 'mark-ws', 'Mark whitespace in diffs by replacing it with symbols' );
$this->addOption( 'norm', 'Apply a comma-separated list of normalization functions to ' .
$this->addOption( 'dwdiff', 'Use dwdiff to display diff output' );
$this->addOption( 'mark-ws', 'Mark whitespace in diffs by replacing it with symbols' );
$this->addOption( 'norm', 'Apply a comma-separated list of normalization functions to ' .