Detail Section

                                                                       
The section detail tool allows you to create a 2D detail section of 2D elements for part of your drawing. The Detail Section tool ignores 3D objects entirely.

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Local menu option:

Trim by circle: If you select this option you define the cutting contour drawing a cutting circle. Simply select the center point of the circle, then the radius. After that you just drag the resulting detail to its new location.