Set_Scroll


Purpose   Forces the Scroll Lock key on or off.

Decln.    Set_Scroll(On:Boolean);

Remarks   On is a boolean to indicate if the Scroll lock should be set to
          on, i.e. true to set it on and false to set it off.

          This procedure will only function on IBM  machines and 100%
          compatibles. Clone machines that have cheap keyboards or non-
          standard BIOS will not properly illuminate the Scroll Lock key -
          some clones use a mechanical trigger to change the Num Lock light
          and do not detect a software change.

Example

BEGIN
    IF NOT SCROLLON THEN
    BEGIN
        FWRITE('TURNING ON THE SCROLL LOCK KEY');
        SET_SCROLL(TRUE);
    END;
END;