135 	_obscured_list	*prev_obs;  in _unlink_obs()  local
142 		prev_obs = obs;  in _unlink_obs()
153 	if (obs == prev_obs)  in _unlink_obs()
156 		prev_obs -> next = obs -> next;  in _unlink_obs()
158 			pnl -> obscured = prev_obs;  in _unlink_obs()
172 	_obscured_list	*prev_obs;  in add_obs()  local
174 	if ((prev_obs = panel -> obscured) == 0) {  in add_obs()
179 	curr_obs = prev_obs -> next;  in add_obs()
183 			prev_obs = curr_obs;  in add_obs()
185 			if (prev_obs == panel -> obscured) {  in add_obs()
193 	prev_obs -> next = obs;  in add_obs()