- In the Family Editor, click Create tabDetail panel (Masking Region).
- Click Modify | Create Masking Region Boundary tabSubcategory panel, and select a boundary line style from the Detail Items drop-down.
- On the Properties Palette, specify properties for the masking region:
- Visible. Specify if the masking region is visible when the family is loaded into a project and placed in the drawing area.
- Visibility/Graphics Overrides. Specify the detail levels at which the masking region is visible (coarse, medium, or fine).
- Sketch the masking region (or regions). Masking region sketches must be closed loops.
For more information on sketching, see Sketching.
- When finished, click Finish Edit Mode.
For a sample detail family with a masking region applied, open the Nominal Cut Lumber-Section family, which resides in the following location:
%ALLUSERSPROFILE%\Autodesk\<product name and release>\Libraries\<language and locale>\Detail Items\Div 06 - Wood and Plastic\06110 - Wood Framing
After you add a masking region, you can sort the draw order. For more information, see Sorting the Draw Order of Detail Components.