THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
TODO: this page needs serious help. We should break each question up better (maybe it's own page and use a template?)
What are the default variables in the value stack? (accessible using #foo)
attr (scans the request, session, and application attributes, in that order)
request (request attributes)
session (session attributes)
application (application attributes)
parameters (request params)
...