King James Pure Bible Search was designed to be used entirely from the
keyboard or entirely from the mouse or any combination of the two. However,
since Mac doesn't support the Alt-key shortcut mechanism for menu items,
buttons, and other dialog controls like Windows and Linux do, it's a little more
cumbersome to navigate it entirely by keyboard on the Mac.
Also, the newer reduced key-count Mac keyboards that are missing Page Up/Down
Keys, Home/End Keys, etc, make navigating by keyboard more difficult by
requiring an additional function key (Fn-key) to also be pressed. That also means
you'll have difficulties with other software too.
Also, most Mac keyboards require the Fn-key to be pressed to activate the F1
through F12 keys, so shortcuts listed above with the F1 through F12 keys, you may
have to press the Fn-Key too.