provides the following help options:
--helpDisplays shortened help text.--help-allDisplays full help text for all dialogs.--help-generalDisplays help text for general dialog options.--help-calendarDisplays help text for calendar dialog options.--help-entryDisplays help text for text entry dialog options.--help-errorDisplays help text for error dialog options.--help-infoDisplays help text for information dialog options.--help-file-selectionDisplays help text for file selection dialog options.--help-listDisplays help text for list dialog options.--help-notificationDisplays help text for notification icon options.--help-progressDisplays help text for progress dialog options.--help-questionDisplays help text for question dialog options.--help-warningDisplays help text for warning dialog options.--help-text-infoDisplays help for text information dialog options.--help-miscDisplays help for miscellaneous options.--help-gtkDisplays help for GTK+ options.
