This routine will set the screen format of the color TV to ROWS rows
by COLS columns. ROWS should be less than or equal to 48 and COLS
should be less than or equal to 120. Characters already written to
the screen are not lost, only reformatted. The reformatting feature
should be used with restraint in order to avoid confusing the user.
This function requires the following include files:
window_set_background_size(_c), window_set_size, window_resize