Hi All,
A few queries that I've split up to make it easier to make use of in Nabble for future reference.

1) What language is used in the scheduler script?  I would assume it's running either velocity or groovy within the xwiki engine?

2) Are $xwiki and $context available to the script? 
3) Is there feedback in the event of an error (like in a logfile or something)?
4) Is there a timeout associated to the script that runs, and are there any permission restrictions on adding the scheduler if it's going to be modifying document objects?