note recent request for drawing on images.

TODO

@@ -28,6 +28,15 @@ THESE TASKS SHOULD HAPPEN WITHIN TWO RELEASE ITERATIONS
 THESE ARE UNSCHEDULED BACKLOG TASKS
 -----------------------------------
 
+* ability to draw lines, boxes, and text on rendered outputs/images.
+  we sort of have this ability through plot3 and composition tools
+  but end-user request was integration with rt* tools so, for
+  example, there could be a way to specify a coordinate frame overlay
+  on images output by rtwizard, using stippled lines.
+
+  some existing APIs with similar functionality include opencv,
+  matplotlib, matlab, and processing
+
 * ability to place/align/mate objects tangentially, e.g., having a
   vehicle rest on a piece of terrain or putting one object next to
   another object.