Keyboard layout assumes existence of Home/End/PgUp/PgDn #7
Description
The default keyboard layout assumes that a full 101-key PC type keyboard is being used, which obviously not all systems (like laptops) have. Several very useful keys are mapped to these less-used keys that are common on desktop keyboards but unavailable to many laptop users. The NumLock key, too.
Separate, although in the same category, is that the F11 key is a system key on macOS (for show desktop). It's therefore not possible to hit RESTORE without special system configuration.