wow, willey
This is a cool tool, thanks (it has given me an idea)
The only down side for what I am looking for is it seems that the att. will have to be added to each sheet, and for the users in my office this is way too many steps and just adding text to each sheet seems a simpler route.
The idea that I got from this is to setup a title border with attributs as you nomaly would in the title border file. When the border is xrefed into the sheet file (I think it is called "deep cloning") deep clone the attributes into the sheet file and using your code somehow to attach the attributes to the xref block as your code does to become a true xref attribute.
So each time the border is referenced in I can attedit the title border xref block, sheet name and number. Then when the plot is activeated a plot reactor will change the layout tab name to the attribute sheet number (A-101) and append the sheet name attribute to the Layout tab so when plotted I get (A-101 First Floor Plan) or a command reactor that reacts on attedit and will rename the layout tab at that point.
Now this would be a trick.
I will post this code in a few years.