Property markings in detail

the property marking sections contain marking/shape properties for these properties, you are asked to add a marking on the object such as a corner or wheel point place a property marking select the mark you wish to place, click where you want to drop the point or line edit a property marking edit the position by dragging and dropping the marking delete the property marking and re draw it assign a property value instead of a marking this is relevant when you should mark the point as, for example, "occluded" instead of setting a point if you assign a value to an already set point, the point or line will disappear from the drawn object