@whale-av Thanks for that. In the end I got it to work in vanilla by adding these libraries:

iemlib
motex
zexy

This looks great, but I can't get it to run yet. What libraries does it need? With a fresh download of pd I get some "Can't create" error messages. Adding in the Zexy external library gets rid of most of them, but I still have problems with these:

pan~
splitfilename

So far I haven't managed to track them down.