WA_VERTICAL
WA_VERTICAL,
attr |= WA_VERTICAL;
if (attr & WA_VERTICAL && t_enter_vertical_hl_mode(t) != NULL)
win->wattr |= WA_VERTICAL;
if (attr & WA_VERTICAL)
win->wattr &= ~WA_VERTICAL;
| WA_TOP | WA_LOW | WA_LEFT | WA_RIGHT | WA_HORIZONTAL | WA_VERTICAL)
if (on & WA_VERTICAL && enter_vertical_hl_mode != NULL)
curscr->wattr |= WA_VERTICAL;