How to use HeadsUp?

I’m poking around the rt-addons directory and came across HeadsUp -

http://www.fsck.com/pub/rt/contrib/2.0/rt-addons/HeadsUp/

How do I “install” this? Just toss in /opt/rt2/WebRT/html/HeadsUp didn’t
work for me.

Thanks.

matthew zeier - “In mathematics you don’t understand things. You just
get used to them.” - Johann von Neumann