i went on the server tonight, typed in the command hlx_auto end rank and no one knew what it did, so brief rundown:
in servers with hlstatsx the hlx_auto with execute a stats command when a certain event occurs.
syntax: hlx_auto event command

valid events:
clear - ?
start - start of round
end - end of round
kill - when you are killed

command is any valid hlstatsx stats command like rank, kpd, session etc etc.

examples: hlx_auto end rank
(i bound this to my keyboard) gives you your rank at end of each round

hlx_auto kill kpd
gives you your kpd when you die

these commands apply to your server session, i.e. untill you leave the server. next time you join the server you would need to re-enter the command again. this doesnt apply to map changes

hope that clears it up for everyone