Reprinted "Cliff's" notes from various manuals.
You can have keys repeat if they are held down. This feature is disabled by default, but you can enable it by setting
(setf si:*kbd-auto-repeat-enabled-p* t)
The speed of repetition is controlled by the variable
You can exempt certain keys from auto-repetition using the function
si:set-autorepeat-p. For example, to make SQUARE one of the keys that do not auto-repeat, you would type:
(si:set-auto-repeat-p #\Square nil)
You can customize key bindings; see the section "Setting Key Bindings in Init Files".
For the MacIvory, see the section "Using the Genera Application on a MacIvory".