A curtain wall 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 curtain wall style, you assign one material to each display component of the curtain wall. 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 curtain wall style, instead of using material display properties, you can turn off the material assignments in the display properties of the curtain wall 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.