Press
the
F4
key a
few
times, and the cursor
moves a
few
spaces
to
the right.
SCREEN
5
When pressed at the same time
as
the
CON-
TROL
key, the FUNCTION keys serve other pur-
poses.
CONTROL and Fl deactivates the key-
board;
then
you
can leave the computer on
without
changing
what
is
in the computer's
memory
if
anyone
were
to
type
on
the key-
board.
CONTROL and
F2
stops the display on
your
screen; the computer can then operate
faster
if
it
is
not
using any
of
its memory for
video output.
CONTROL and
F3
stops the small
beep sound made
when
you
press a
key
CON-
TROL
and
F4
allows
you
to
display the inter-
national language characters
that
are
built
into
the 1200XL's keyboard. Let's
try
it.
First
clear the screen
by
pressing a
SHIFT
key
and the
CLEAR
key Starting in the
top
row
of
letter keys, press each
LETTER
key once, in the
order
they
appear on the keyboard. Then add a
semicolon, a comma, and a period.
SCREEN
6 ·
144
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