This is a yawner, Postscript (the language) is very simple, given run of the mill interpreter machinery. An actual working Postscript implementation is about graphics and font rendering, not the language interpreter. That stuff is still not trivial.

Yet, it's going to be novel fun for some people. Let's celebrate today's lucky 10000. https://xkcd.com/1053/

the amount of care to detail in the base language is great though. reading PLRM is a joy