REDRAW_GARBAGED_FRAMES, CANCEL_LINE, CLEAR_FRAME_RECORDS,
INIT_DESIRED_GLYPHS, SCROLL_FRAME_LINES, PRESERVE_OTHER_COLUMNS,
ADJUST_WINDOW_CHARSTARTS, CANCEL_MY_COLUMNS,
REDRAW_GARBAGED_FRAMES, CANCEL_LINE, CLEAR_FRAME_RECORDS,
INIT_DESIRED_GLYPHS, SCROLL_FRAME_LINES, PRESERVE_OTHER_COLUMNS,
ADJUST_WINDOW_CHARSTARTS, CANCEL_MY_COLUMNS,