Tandy 1000 Basic Reference Manual page 340

Chapter 10 I BASIC Keywords
Notes:
0
BASIC ignores any points t h a t a r e outside the viewport's
0
RUN, SCREEN, and WINDOW statements, without parame-
CLS clears only the active viewport.
Sample Program
limits.
ters, define the entire screen as
the
viewport.
1 0 SCREEN 1
2 0 V I E W ( 1 0 , 1 0 ) - ( 2 0 0 , 1 0 0 ) , 2
3 0 P S E T ( 1 0 0 , 5 0 )
4 0 DRFlW " L 4 0
E 2 0 F 2 0 "
Line 20 sets the viewport. Line 30 sets the starting point for the
DRAW statement in Line 40.
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