Archicad includes a predefined set of default fills.
Fills are used to display elements and as components in Building Materials and Composite structures.
Use the Fill tool to draw freehand fills in the project - for example, to create patches in a Section or Elevation view.
Cover fills can be used to embellish surfaces.
Assign a Cut Fill (GDL Elements)
Fill Display Mode: True Fill Appearance vs. Bitmap
Edit Vectorial Fill Appearance