Canon Cat Reference Manual page 74

UNDO and SEND CONTROL
[UNDO]has nO efFect on[SEND CONTROL].
Control Characters
Used by
the Cat
The
Cat recognizes a
few
incoming control characters:
CONTROL-E
causes
the Cat to
send
back
a
self-identify-
ing
message
(Canon Cat
modem). Used
to find
out
whether you
are
communicating
with
a
Cat
or
not.
CONTROL-G causes the Cat to beep. Used to wake up
the
person
you
are
communicating with.
CONTROL-I
sends a
tab character
to
the Cat.
May
be
of
use
to someone sending
to you from
a
non-Cat terminal.
CONTROL-M
sends a
return character to the Cat.
May
be
useful to someone
sending
to
you from
a
non-Cat terminal.
CONTROL-L
sends a
page character to the Cat.
May
be
useful to someone
sending
to
you from
a
non-Cat
terminal.
-
3. Receiving Text
When you receive text
from
another
Cat, computer,
or
data
service,
the incoming
text
automatically appears
in your
text
as
if
it were being typed
there.
It
is
always inserted,
so
it cannot harm other text. The
incoming text normally
ap-
pears at the cursor,
but
if
you
have
typed some new
text
since your last leap, last
use
of
[SEND],
or since
extending
the highlight, the incoming
text
will
appear
above the
newly
typed
text. This
tends
to keep answers and
replies
alternating
in chronological
order.
There
is
no difference between the
text you
receive and
the
text you type
yourself. You
can
record
it with
[DISK],
print
it with
[PRINT],
or
use
any other command on
it.
All
the
things you
can
do
with
the
text you create
yourself
can
be
done
with text you
receive.
It
is
also possible that
the
incoming
text
will fill yourtext.If
this happens the
Catwill
beep and
[EXPLAIN]
will
tell
you that
you're
out
of room.
You
can erase
some text to make
room
for
more
received
text, or you
can
copy up some
text
to
another disk
and
then
erase
it.
You
can
type
and erase
while text
is
coming in, but
avoid
leaping.
If
you leap while receiving text,
say,
to
edit
something
you
ire
typing,
the
incoming text
will
start to
flow'at
the
point where the cursor has landed.
This
can be
confusing
because the
incoming
text
will
mix with
the
text
already on-screen.