We are about to switch to a new forum software. Until then we have removed the registration on this forum.
I just wrote a new LOGO Turtle library for Processing. More functionality than existing Turtle libraries, including "push" and "pop". http://leahbuechley.com/Turtle/ or on github: https://github.com/leahbuechley/Turtle
You should also announce it here: https://www.Reddit.com/r/processing :bz
What's push and pop here?