+ - Improve GisMarker
+ - Add min/max LOD
+ mabye: ?
+ - Add linked list node to GisObject for add/remove
+ - Move rendering code to objects intead of GisOpenGL
+ - How to work with non-opengl renders, do we care?
+
+GisTile:
+ - Prioritize tile updates
+ - Only updates visible tiles
+ - Render correct tile resolution when zooming out
+ - Integrate with GisTile?
+ how:
+ - Update tiles after each render
+ - Use backfaces to only fetch rendered triangles for each tile
+ - Only split/update/load tiles that are used
+
+Roam: