Here's a list of the shortcut keys for Circulation. To use shortcut keys, the focus must not be on any field.

Key	Press this key
k	To show/hide the panel with the shortcut keys.
b	To scroll to the bottom of the page.
t	To scroll to the top of the page.
c	To clear the current form.
r	To toggle between Reading Mode.
Esc	To exit any panel.
a	To select/deselect all records in a list, e.g. in your search results.
f	To show/hide the available facets in a brief display.
l	To show/hide the holdings and list the titles only in a brief display.