[QTI] Hi and some questions

[Danny Kodicek]

Hi there. We've been using an internal file format for worksheets with our
software for a while, but as I'm doing a general review and recode of it, I
thought it might be interesting to look into switching to QTI. I've been
doing a bit of research on the subject, and quite a few questions and
potential compatibility issues have come up, so rather than driving myself
crazy with the documentation (I really, really hate looking through
specification documents - why do they always have to be so dense?), I
thought I'd see if I could get some opinions from the people who know!


So, in no particular order:
Can I specify accompanying documents to go with the test? Web pages / files
/ SCORM objects? (Perhaps somewhere in the item metadata)
If I have a SCO in a Learning Platform, is there any way to get data from
the object into the QTI assessment (a long shot, I know)
Which LPs support it? Is there a comparison chart somewhere? 
Is there a good QTI development tool, and/or a good tool for viewing and
testing QTI objects?
Can I extend the format to include additional information for my own
purposes?

And a few more nitty-gritty ones:
If I want to include an atomic symbol (eg a 12/6C atom) is there any better
way to do it than using MathML?
(related to the recent post on multiple textEntryInteractions) How easy or
hard is it to mix different response types within a single item? Can I have
an item that uses both inline combo boxes and inline answer fields?

Apologies for the number of questions, and leaping in without the customary
lurk period...

Best
Danny