Bug: a88/4a6

Hard work but the rewards would be tremendous. A command console in the
running program to perform custom manipulations en masse. A headless
batch mode allowing PP to be incorporated into a publication build
script. Groovy is an obvious choice for language, but ruby seems well-
regarded for constructing simple DSLs.

Probably too time-consuming ever to be implemented, but nice to have
on the wishlist. (Actually, would be easy to do as Groovy hooks 
straight into the Puffin's guts; the hard bit would be designing
a DSL simple enough for people to use without intimate knowledge of
PP's internals.)

Given Python's popularity with the scientific and particularly pmag
crowd, jython might be the best choice -- it was stagnant for a long
time but 2.5 has recently come out. See
http://wiki.python.org/jython/UserGuide#embedding-jython
org.python.util.PythonInterpreter
org.python.util.ReadlineConsole
(also JLineConsole and InteractiveInterpreter in same package)
http://don.freeshell.org/jython/ and
http://code.google.com/p/jythonconsole/

This has now mostly been implemented as #176, with a bundled
Jython interpreter. However, I can't close it yet, as PuffinPlot
still lacks an interactive console ( http://don.freeshell.org/jython/
currently looks like a promising candidate, though).