[ZPT] Moving scripts to center stage

[jmr@computing.com]

chrisw> > > P.S. ZPT's have "here" and Python scripts have "context". They seem
chrisw> > like
chrisw> > > they're much of a muchness, despite the different names. Is that true?
chrisw> > 
chrisw> > They're exactly the same, yes.
chrisw> 
chrisw> Perhaps they could use the same word for it then?

Seconded!  Presumably we can introduce "context" into ZPT and allow
both for a while and then kill "here".