Canon Cat Reference Manual page 10

Cursor Blink
Rate
In addition to
the
cursor
shape,
the cursor
blink rate also
indicates the state
of
the
text:
-
Safely recorded or clean
text.
The
cr.;rsor
blinks
faster,
about
three times
per
second
when
the text
has
been
recorded on a
disk or
just
played back from
a disk
(see
Using the Disk
Drive,page25, for
more information).
-
C
lnnged
text
The cursor
blinks
slower, about once
per
second
when the text
has
been changed
and
the changes
have
not yet
been
recorded. In this
state the
text
is
called
dirry.
Moving
the
cursor, extending the
highlight, printing text,
or using
IEXPLAIN]
do
not make the text
dirty.