OptionalconfirmOptionaldocumentManage document.title from the workbook name + a leading ● when there are unsaved changes.
true (default): capture the current document.title as the base (e.g. the app name).false: leave document.title alone.The title becomes "<name> - <base>" (or just "<base>" for an unnamed workbook), with a
leading "● " while dirty.
OptionalkeyboardSuppress browser keyboard shortcuts so they don't fire the browser instead of the app.
true (default): the DEFAULT_GUARD_KEYS (Ctrl/Cmd + O/S/W/N/T/M) plus Alt+Arrows.false: don't touch the keyboard.
When
true(default), install abeforeunloadguard that prompts the browser's "leave site / unsaved changes" dialog while the workbook is dirty.