Does anyone understand xauth?

[Timothy Murphy]

I'm trying to get Bluetooth (bluez) running on my computer,
and I see in the rather sparse documentation
a suggestion that one should give the command "xhosts +".

As far as I can see, xhosts has been replaced
(everywhere, or just in Fedora?) by xauth.
I looked at "man xauth", which I suspect was written by aliens,
but I couldn't see what could take the place of "xhosts +".

Can anyone enlighten me?

-- 
Timothy Murphy  
e-mail (<80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland