Fixed deleting menu items of history and batch mode clips using Command-Delete. It was working in early betas, or perhaps on versions of the OS before 15 Sequoia, but now it's implemented in a better way which also allows the menu to stay open after using Command-Delete. Also a few minor fixes: - Widened key shortcut entry fields in the General tab of the Settings window. - Made outline in the purchase confirmation sheet visible with both light & dark UI modes. - Corrected label in the Intro window's first page explaining how to re-open that window. - Avoid emitting some spurious warnings into the system log.