static void _CheckSelection(screen) register TScreen *screen;
static void _CheckSelection (register TScreen *screen)
static void _CheckSelection(screen)register TScreen *screen;{    if (screen->cur_row > screen->endHRow ||	(screen->cur_row == screen->endHRow &&	 screen->cur_col >= screen->endHCol))	 ;    else	DisownSelection(term);}