It's a very fun exercise when you are starting with PostScript... and indeed, un...

It's a very fun exercise when you are starting with PostScript... and indeed, unless you are familiar with Forth or any other stack based language, it's a big pain to write. A long time ago I wrote a very short "tutorial" [1] on my blog (which right now looks very bad due to change in stylesheets that don't have translated well... The code for the Mandelbrot set there is broken (due to googlecode dying), but I just moved from my local copy to a gist [2]. And the code for the Christmas postcard (with Koch snowflakes and Gosper curves) is here [3]. It is commented, but not sure how useful it can be.

Edit: having a blog with posts from 10 years ago you want to reference is painful... Broken links, grammar errors, unclear writing, typos...