Tandy 1000 MS-DOS Reference Manual page 65

CLS
(('lear Screen)
CLS
Clears the screen.
Chapter 6 / Command Reference
Internal
Notes and Suggestions
Use the CLS command to clear a cluttered, hard-to-read screen.
Examples
c 1
5
[ENTER
I
clears the monitor screen and moves the prompt and cursor to
horne position (the top left corner of the screen).
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