spd_ui_draw_object method: createInstance This routine creates an instance of the static components of any display, it also leaves only the dynamic components unhidden after it is complete, so the draw object is ready for instance based drawing See IDL Help documentation on instances. The short explanantion is that instances are used in object graphics to make draws, much much faster. $LastChangedBy: jimm $ $LastChangedDate: 2014-02-11 10:54:32 -0800 (Tue, 11 Feb 2014) $ $LastChangedRevision: 14326 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/spedas/gui/display/draw_object/spd_ui_draw_object__createinstance.pro $