Hi,everybody.

I came across a little question when I create the CAD model with WizardHole Feature. Just as follows, there are several sketch features in the feature design tree. However, part of these is attached with a parentheses containing a minus sign. In my opinion, it's a sketch that is not used to create other feature, I don't know if it's right. So, can someone answer what does this sign mean, and how can I recognize these sketches in the feature tree by the SolidWorks API? Thaks a lot.