Canon Cat Reference Manual page 73

If
you
use
[SETUP]
to
select
a line ending of
None,
the
SEND command
sends
only the
surface
text
without
formatting
it. Return
characters
explicitly
typed
by
you
are
sent and tabs are sent
as
tab characters. No information
is
sent
about margins
or
indents,
and
nothing
is sent
at
the end
of each
line.
Selecting None
as
the
line ending
is useful
for
sending raw
text to
another computer where
it
will
be
reformatted.
Since there
is
no
way
to transmit half-spaces
to non-Cats,
the
Cat alternately
sends
a
space character
or
no character
at
all
as
it encounters half-space
characters in
the
text. This
is
guaranteed to make Justified text
appear
justified
to the
receiver. An odd number ofhalf-spaces
can
only
occur
on
a
centered
line,
so centered
lines
may appear shifted by
a
half-space when received.
Sending
Control Characters
[SEND CONTROL]
enables
you to
send
control
characters
from the Cat
keyboard.
Control
characters are
special
characters
required by
some data services
forcommunica-
tions. They
are not
required for communications
between
Cats.
After you using
[SEND CONTROL],
and for
as
long
as
you
continue to hold down
[USE FRONT], each letter key you
press sends
a
control
character.
[c]
sends
a
CONTROL-C
character,
[e]
sends a
CONTROL-E,
and
so
forth.
[SH|FI]
and [SHIFT LOCK] are ignored
while
using
IsEND
CONTROLI.
There
are
more control
characters than there
are
letters
in
the alphabet,
so there are several
control
characters
with-
out letter
narnes. These are
listed below:
Control Character
It
Sends
Key
lrABl
[SPACE BAR]
IERASE]
I2l
t3l
t4l
t5l
t6l
ESC
escape character
break
DEL
delete
NUL
blank
FS
field
separator
GS
group
separator
RS
record
separator
US
unit
separator
[SEND
CONTROL] does
nothing
unless
you
have
estab-
lished
a
telecommunications
connection.