Sketcher ConvertToNURB

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Description
Converts compatible geometry ( edges and curves ) into a B-spline ( see: https://en.wikipedia.org/wiki/B-spline )

How to use

 * 1) Select a line or curve and apply.
 * 2) make sure to have either comb, degree or multiplicity visible, otherwise nothing seems to happen
 * 3) If you convert STRAIGHT LINES, be sure to increase the degree of the line(s) to make then bendable at all.