Atari 400 User Manual page 150

USING THE
BASIC LANGUAGE
SCREEN 1
This is your beginning screen in BASIC.
You can do the exercises in this section if you
have a BASIC language cartridge for your Atari
400,800, or 1200XL. If you haven 't already
installed the BASIC cartridge, turn your com -
puter OFF and insert the cartridge in the cartridge
slot on your computer. (IF YOU /-lAVE AN ATARI
800, put the cartridge in the LEFT cartridge slot.)
Then turn your computer ON. You will
see
a
blue screen with the word REAOY .
SCREEN 1
148