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Create a dimension label for an arc. It measures the angle subtended.
An arrow specifies which arc is labeled. The text is always along the dimension label and centered. Both are always in the plane of the arc. Both can be slid radially. The units are degrees and are included.
Pick three points, the first of which is the vertex of the arc and two additional points which define lines going through the vertex point. There are now four possible arcs, one in each quarter of these intersecting lines. Pick another point which defines which quadrant and how far away from the vertex the label should be. Note: You can use points as input to this command.
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