This is an example server that shows how to draw arbitrary figures in a client (e.g. MobileEyes) via ArServerInfoDrawings. It draws some lines, "arrows", and moving dots with various sizes and colors. You can use these drawings for debugging or visualization, for example, to represent sensor readings. In fact, specific support for ArRobot, ArSick, ArSonarDevice, ArIRs and ArBumpers are built in to ArServerInfoDrawings: see drawingsExampleWithRobot.cpp or serverDemo.cpp.