User Portlet

![Markov kernel from 4 to 4][1] &[Wolfram Notebook][2] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=markov.png&userId=3100997 [2]: https://www.wolframcloud.com/obj/2592d700-894c-4bb6-92f9-9ced21b15e93