- Legacy function editor, with param editing (no actual custom variable toolbox category): http://studio.code.org/s/1/level/87
- Legacy funciton editor, no param editing: http://studio.code.org/s/1/level/108
- Legacy function editor, with return value. Function execution on level load (solution): http://studio.code.org/s/artist/stage/1/puzzle/9
- Level builder-built, legacy function editor, no param editing: http://studio.code.org/s/course3/stage/6/puzzle/9