Holes and radii need sizes on the drawing as well as the overall extents. Select
circles or arcs, right-click and choose Add Radius Dimension or Add Diameter
Dimension. The value is measured live from the curve, found by its entity ID, so
it follows edits; only the leader angle and label offset are saved. A radius on
an arc stays on its sweep, and labels are kept clear of the curve and center.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>