Filename in panel buttons

[C. Brian Ivey]

Dear List,

I have been using Emacs for a short period of time. I often up several 
files, each in a new editor (I know I could use the same editor, but 
prefer to do it this way). When I do this I have trouble telling which 
file is opened in which editor. Unless I get lucky I have to click 
through all of the buttons on the panel. I do this because the name used 
for each button is the same. On my machine at home it is 
"emacs@localhost.localdomain". How do I change this to only show the 
filename.

Thanks,
Brian Ivey