Actually Jonah, can you take a swing at rewriting the user’s guide custom lpdf/lpmf section: https://mc-stan.org/docs/2_24/stan-users-guide/examples.html
I had a look and I think it needs improved. Like, 45 minutes just zoom some stuff out and put a pull in docs so we can discuss.
Like, one problem is the title is “Custom Probability Functions” and it doesn’t really show you all the steps to do a custom probability function. I think it will be easy to tag on the new lupdf/lupmf stuff once we have a foundation but I’m not sure it’s there yet.