[PD] Data Structures GOP and installing latest PD

[João Pais]

> I didn't know you could GOP data structures.
> This opens up a new world.
> Where is an up to date tutorial on using data structures?

I've prepared a DS tutorial that some people liked. But since I've spent  
some time on it, I would prefer to be given the chance to present that  
more often before spreading it around as I usually do with my other stuff.

There's also an old tutorial by F Barknecht around, but I don't know  
anymore where.

João Pais