Masking Region vs Filled Region
Overview:
Should you use a masking region or a solid white fill set to opaque? There are some positives and negatives to each.
Understanding
Filled Regions
Filled Regions can be set to be opaque or transparent, and allow different patterns including solid fills. To learn more about patterns within filled regions, visit www.pattycake.io.
Masking Regions
Masking regions are always opaque and set to match paper color (white). The intended use is to (mask) cover objects in views. You can have two different types, either 2D masking regions, or 3D masking regions (which are 2D masking regions in a 3D family).
Behavior
Each will behave differently depending on the structure of the family and setup. Both can actually do the behavior of the other quite well in certain circumstances, but there are some clear differences that become clear when exported to CAD and in symbols.