Metrologic Optimus S Programming Manual page 97

The cursor position is not affected after the operation.
Return None
See Also fill_rect
clr_scr
Purpose To clear everything on the LCD.
Syntax void clr_scr (void);
Example clr_scr();
Description This routine clears contents of the current screen and places the cursor at the
first column of the first line, i.e. (0, 0).
Return None
See Also clr_eol, clr_icon, clr_rect
Chapter 3 Terminal Specific Function Library 91