High Quality Content by WIKIPEDIA articles! VRR (a Vector-based gRaphic editoR) is a free and open source vector graphics editor application designed especially for creating illustrations of mathematical articles.VRR has a simple but powerful operation set: creating, manipulating and transforming basic graphic primitives, which are points, segments, rational Bézier curves, elliptic arcs etc. All objects can be determined not only by absolute coordinates, but also by geometric dependencies on other objects intersections, significant points, other curves etc. When an object is changed, the dependent objects are recalculated automatically. This enables you to modify the image easily without breaking the lines visually tied together.
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