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48625: Clear Lines
Clear the picture lines, using the line count stored at 47936.
Input
B Line count from *47936
ClearLines 48625 CALL SwitchToNormalScreenOutput Call SwitchToNormalScreenOutput to select the screen channel.
48628 LD A,(47936) Clear the number of lines held by *47936 from the bottom of the screen using CL_LINE.
48631 LD B,A
48632 CALL 3652
48635 RET Return.
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