### Minimum shape area for mask opening check

The check for ensuring minimum void opening(Mask opening on shapes) reduces potential bubbling during manufacturing process. But this check is not relevant for small shapes. This attribute is for capturing minimum area of shapes that qualify for mask opening. If any value is specified here, the minimum mask opening check will run only for those shapes whose area is larger than this value. Otherwise, the check will run for all the shapes if turned on.
This attribute assumes area value in design units( say, sq mil or sq nm).