Function ShowSignList

src/signs_gui.cpp:373–376

* Open the sign list window * * @return newly opened sign list window, or nullptr if the window could not be opened. */

 * @return newly opened sign list window, or nullptr if the window could not be opened.
 */
Window *ShowSignList()
{
	return AllocateWindowDescFront<SignListWindow>(_sign_list_desc, 0);
}

/**
 * Actually rename the sign.