Canon Cat Reference Manual page 50

Normal
tab stops appear as
small
riangles
on
the
ruler;
decimal tab
stops are shown
as
round
marks.
A
maximum
of 79
tab
stops may
be
set
at
character
positions
2 to
80.
Clearing
All
Tabs
If
you
use
[SET/CLEAR
TAB],
and
then,
while
holding
[USE
FRoNT], press [ERASE],
all
tab
stops
are erased
from
the
highlighted
text and
from
the
paragraph
the
cursor
is
in
if
the
highlight is nor extended.
Resetting
Initial
Tabs
You
can restore
tab
settings
to their
initial
values
with
[SH|FTI-[TAB]:
hold
[USE FRONT]
and [SHIFT], then press
and release
[SET/CLEAR TAB].
This restores
initial
tabs to
the
highlighted text.
The
initial
tab stops
for
the
United
States
keyboard
are at character
positions
13,
18,
28,38,
48.
and 58.
UNDO and the SETiCLEAR
TAB
Command
After you
release
[USE
FRONT], [UNDO]
will
restore the
tab
stops
to
the
condition they were
in when
you
first
held
down
[USE
FRONTI,
no matter
how many
tab stops
you
have changed.
Normal Tab
Stop
Normal
tab
stops
keep columns
of text
aligned along
their
first
characters.
When you
press
[TAB]
during typing,
the
cursor moves forward to
the
next tab stop
and stops.
If it's
a
normal tab stop, typing proceeds
forward from there
as
usual.
The
space
between the last character
you typed
and the
first
character at the tab stop is occupied
by
a tab
character,a
single character that takes
the
place
of many
space
charac-
ters. Tab characters are
flexible. As you insert text to the
left of
a tab,
it
compresses.
A
tab can
compress
to
one
character
position, but
no more.
Further typing to the
left
of
a
tab
character already compressed
to
one character
position
will
cause
it
to
move
to the
next tab stop. Its
length
may change
as a
result. Tab characters
are
invisible
unless
highlighted. When highlighted, they
appear as
a right-
pointing arrow, gray on
a
black background
(providing
your
screen
mode
is black-on-white)