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* GetEdgePoints - returns a list of cross-points of the outside edge of a ShapeRange (useful for dimensioning)
* getCrossPoint - returns a single cross-point from a ShapeRange, where either the highest or lowest value can be specified. eg, the crosspoint closes to the bottom edge of a shape.
* Toolbar adds simple methods for adding toolbars and buttons to Coreldraw
* ScaleDetail allows the user the create a drawing detail that can be dimensioned, and have a different scale presented than the document.