multiple windows/different views

Ok, I confess;
   I haven't kept up with Amaya (been using 8.1 since sometime in '03).

So now that I have updated to a new version (9.1), I can not seem to 
find a feature that I very much liked, namely having multiple windows 
open with different views of the document.

In the 'old' help, there was a page "Working with Document Views" which 
stated, "Amaya can present different views of a document simultaneously. 
Each view is displayed in a different window so you can clearly see what 
is happening when you edit complex documents."

Yes, I can get the split screen, but since I have a multi-monitor setup, 
I would like to be able to (for example) have separate windows for 
formatted and source view (and occasionally links and alternate).


Am I just missing the configuration for using multiple windows?

David