CLS Statement QuickSCREEN
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CLS - a device I/O statement that clears the display screen
Syntax
CLS [{0|1|2}]
■ If all arguments are omitted, either the graphics viewport or the text
viewport are cleared, depending upon previous uses of VIEW statement.
■ 0 clears the screen of all text and graphics.
■ 1 clears only the graphics viewport, if it is active.
■ 2 clears only the text viewport, leaving bottom screen line unchanged.
See Also ◄VIEW► - to see how to activate the graphics viewport
◄VIEW PRINT► - to see how to set the text viewport
◄WINDOW► - to see how to customize the graphics viewport