Atari 400 User Manual page 143

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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