usher documentation

Where does usher documentation hide out now?

I'm specfically looking to fine out how to get usher to reread the 
configuration file.

I suppose I can look up the process id with ps, kill it, and reissue the 
startup command, but is there a more elegant way?

I seem wtill to be running usher-0.99, by the way.  I suppose I should 
look for a newer one, too.

-- hendrik