__ISDERWIN
win->flags |= __ISDERWIN;
if (win->flags & __ISDERWIN)
if (sub_win->flags & __ISDERWIN)
if ((dwin->flags & __ISDERWIN) != 0)
if ((dwin->flags & __ISDERWIN) != 0)
((((dwin->flags & __ISDERWIN) != 0) &&
if ((dwin->flags & __ISDERWIN) != 0)
if (win->flags & __ISDERWIN) {
if (win->flags & __ISDERWIN) {
if (win->flags & __ISDERWIN) {
if (win->flags & __ISDERWIN) {
if ((win->flags & __ISDERWIN) == __ISDERWIN) {