29:2 · This structure is the same as that of the wheel cross above, but here the cross is placed diagonally in the circle which means a noticeable change of meaning. In this case the cancelling and neutralizing characteristics of the diagonal cross come into play. Some of the potentialities of the empty circle, which represents all possibilities, are cancelled. As a traffic sign (stopping prohibited) limits the possibilities as to where a vehicle may stand still for a while, and in printing (type is damaged or faulty) it is the possibility of setting a text that is cancelled.
    The Swedish military uses on maps when marking permanent constructions like bridges to be prepared for destruction. When the object or installation has been destroyed, usually by blasting, a circle is drawn around on the map to show .
    In the French hobo or gypsy sign system means here there is nothing of any interest or here they have stones for hearts and give nothing or here you can sleep, but they give nothing.