execCommand method
execCommand implements the commands from the commmand manager section See the relevant Mozilla documentation here for details. https://developer.mozilla.org/en/docs/Rich-Text_Editing_in_Mozilla
Implementation
void execCommand(String commandId, {bool showUi = false, String? value}) {
if (!_ready) throw AlohaException(AlohaException.notReady);
_alohaContext.callMethod('execCommand', [commandId, showUi, value, null]);
}