Did you not work out what it did before you changed it 
?
A simple search found this post, which describes what you need to do:-
https://bobj-board.org/t/62385
Mak 1 
(BOB member since 2005-01-06)
Did you not work out what it did before you changed it ?
A simple search found this post, which describes what you need to do:-
https://bobj-board.org/t/62385
Mak 1 (BOB member since 2005-01-06)