A door/window assembly consists of a number of components whose display properties can be determined by the materials assigned to each component.
When you assign materials to a door/window assembly style, you assign one material to each display component of the door/window assembly. For example, you assign a wood material to the frame and a glass material to the glass inset. You assign materials to components in each display representation where you want the materials to be used.
If you want to use the display properties of the door/window assembly style, instead of using material display properties, you can turn off the material assignments in the display properties of the door/window assembly style.
Material definitions consist of display components that correspond to component types of objects. For example, the Linework component of a material is used for all linework in plan view. The Surface Hatch component of a material is used to hatch all object surfaces in three dimensional (3D) model views and in elevations.