It
is
also possible
to
program the
FUNCTION
keys yourself
to
perform
whatever
tasks
you
wish
to
assign
to
them. Programming these keys,
however, requires advanced
knowledge
of
BASIC
programming.
A
few
uses
of
the FUNCTION keys are built
into
the 1200XL computer. When pressed
by
them-
selves, the
FuNCTION
keys move the cursor
around the screen. They serve the same purpose
as
pressing the CONTROL key
with
the ARROW
keys, except
you
can press
only
one key instead
of
two.
Let's
try
moving the cursor
with
the
FUNCTION
keys.
To
help
you
see
where the cursor
is
mov-
ing, first type a
few
words
on the screen.
SCREEN
1
Press
the Fl key once. The cursor moves up one
line.
SCREEN
2
Now
press the
F2
key
twice
. The cursor moves
down
two
lines.
SCREEN
3
Press
the
F3
key twice, and the cursor moves
two
spaces
to
the left.
SCREEN
4
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