case PM_PAUSED_SAVELOAD:

		case PM_PAUSED_ERROR:

		case PM_PAUSED_NORMAL:

		case PM_PAUSED_GAME_SCRIPT:

			break;

		case PM_PAUSED_JOIN:

		case PM_PAUSED_ACTIVE_CLIENTS:

			if (!_networking) return CMD_ERROR;

			break;

		default: return CMD_ERROR;

	}

	if (flags & DC_EXEC) {

		if (p1 == PM_PAUSED_NORMAL && _pause_mode & PM_PAUSED_ERROR) {

			ShowQuery(

				STR_NEWGRF_UNPAUSE_WARNING_TITLE,

				STR_NEWGRF_UNPAUSE_WARNING,

				NULL,

				AskUnsafeUnpauseCallback

			);

		} else {

			PauseMode prev_mode = _pause_mode;

			if (p2 == 0) {

				_pause_mode = _pause_mode & ~p1;

			} else {

				_pause_mode = _pause_mode | p1;

			}

			NetworkHandlePauseChange(prev_mode, (PauseMode)p1);

		}

		SetWindowDirty(WC_STATUS_BAR, 0);

		SetWindowDirty(WC_MAIN_TOOLBAR, 0);

	}

	return CommandCost();