[1][2] If either file is missing or corrupted, a Macintosh may display a blinking question mark when booting.
In System 7, desk accessories were turned into normal applications that could be placed anywhere on the hard disk, though their default location is a new "Apple Menu Items".
Users could double click on fonts or sounds contained in the System file to preview them.
Sounds, keyboard layouts and fonts could be added to the System file through drag and drop.
ALsoft's Master Juggler could also manage Fkeys, items in the Apple menu, and system sounds.