Canon Cat Reference Manual page 24

UNDO and LEAP AGAIN
IUNDO] returns the cursor and the screen
to
the way
they
were before the leap began.
Creeping
Creeping moves the cursor character-by-character
in
the
direction indicated
by
the
LEAP
key. It
is
similar to
conventional
left-right
cursor
control. To creep, press and
release either
LEAP key; the cursor moves
when you
release the
key.
You
can tap the
LEAP key repeatedly to
make
the
cursor
crawl smoothly character-by-character
in
one
direction, but
it
is
much better
to
leap than creep.
Creeping is
for
short moves only.
If
the
cursor is wide, the
first
creep
makes
it narrow.
The
next
creep
moves the cursor one
character in
the
direction
indicated by
the
LEAP
key.
Creeping can also be used
to
adjust the
area
covered
by
the extended
highlight (see
Adjusting
the
Highlight
by Creeping, page 21,
for
more
information). Creeping does not autorepeat.
UNDO and
Creeping
[UNDO] returns the
cursor to where it was before
you began
creeping.