@Gimly Thanks! The examples help out A LOT!!! Im trying to create a multipoint selection system. I have looked at the Selection example which uses a RectangleAnnotation and the ZoomManipulator which just uses the OxyRect . 1) Which would be better to use for functionality that would basically duplicate the zoom accept it would select instead of zoom? 2) Is there a way to display different colors on on the markers? Seems like extending the LineSegmentSeries would work, but I didn't know if there was a better way.