I heard on Fox this morning it is "limited" immunity. They were questioning what the limitations are (only the DoJ knows??)
Here’s the link to the limited immunity issue:
http://www.freerepublic.com/focus/f-news/3437907/posts
IIRC, he was trying to get out of answering ANY questions. The judge then ordered them to produce the immunity agreement to him.
They evidently couldn’t get him out of testifying, but JW got another Clintonite on record refusing to answer questions.