VTech PreComputer Prestige Course Manual page 52

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END
Line # END
The END statement is used as the last command in a program.
Examples:
160 END
999 END
PSET
This command is used for drawing a specified point on the screen.
PSET X, Y
(X, Y) is a coordinate of the specified point to be shown.
X represents a value of horizontal position.
Y represents a value of vertical position.
Example:
10 CLS
20 PSET 100, 8
The result:
a screen pixel at coordinate (100, 8) will be turned on.
PRESET
This command turns off a specified point on the screen.
PRESET X, Y
(X, Y) is the coordinate of the specified point to be cleared.
X represents a value of a horizontal position.
Y represents a value of vertical position.
50
It stops the program.

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