Hi Bruce,
My Aware version is 9.0. (BO is Business Object)
It should stay fixed if you specify a width in the DIV style if you use display HTML when you mouse over a record. The box that will popup from the mouse hover should adjust automatically so that the entire DIV is visible when the cursor is at the sides of the query.
Below is an example I made that could help you. The Donor_Full_Name and Comments are Text attributes in my BO, it will not work if you try use an attribute that is a reference to another BO, so only Aware's default attribute types will work.
First Picture is the HTML I used and the second is what I can see when I mouse over a record in the query. Please excuse the weird Donor name I wanted to demonstrate how it would look if 1 single word is very long, using word-break will break the word so it doesn't go outside of the box.
Hope this helps guide you in the right direction.

