First i'm on FWH 16.11 and from 16.12 there has been more improvement for the Getbar.
I've not found information that it is possible that there is a dropdown from the Getbar.
So, If you have a large browse you can easily put a search string and Xbrowse will filter it.
Now it would be great that if selected (by programmer) that there would be a dropdown list with Unique data from that field in the browse.
Like
Caps....
Home...
Profess..
New...
Bags..
Maybe it's even on the todo list