BLANK_TO_EOL
#define IS_BLANK_TO_EOL(scr) ((scr)->mouse_flags & BLANK_TO_EOL)
SET(scr->mouse_flags, BLANK_TO_EOL);
CLR(scr->mouse_flags, BLANK_TO_EOL | MOUSE_VISIBLE);
CLR(scr->mouse_flags, BLANK_TO_EOL | MOUSE_VISIBLE);
if (ISSET(scr->mouse_flags, BLANK_TO_EOL)) {
CLR(scr->mouse_flags, BLANK_TO_EOL);