This attribute allows to define if the insertion plan of the modules should contain the normal one according to its plan.
With True value, the module will be inserted according to the normal of the plane where it is being inserted.
When registering this attribute, its default configuration defines that it is created automatically (in a hidden way) for all entities (Automatic Creation property) with a default value of False (False), that is, the attribute is applied in all modules but without defining that the normal of the item should be according to your insertion plan. If it is necessary to define the opposite, the normal of the item is the same as the insertion plan, it is necessary to apply the attribute and change its value to True.
Example:
Lamps. When inserted into the design, if inserted into the ceiling, they must enter facing downwards and, if inserted into the wall, facing to the side.
Through the images below, it is possible to notice that on the left the luminaire has the PlainNormal attribute with a value of False, or not even applied (due to the default value - False) and, therefore, the luminaires do not respect the normal of the plane where they are inserted. On the right, with the PlainNormal attribute with True value, the luminaire starts to adopt the normal of the plane where it is inserted.
To apply the attribute, click here and see how to proceed.