@anchor around @item

Just wondering where the best place is for an @anchor in a table or any other
kind of enumeration (@itemize and suchlikes) where we want a reference to a
specific @item.

Would that be before or after the corresponding @item command.

Node (info "(texinfo) @anchor") does not tell anything about thart AFAIK.

In the example below, should I place a0 or a1 to get a reference to item
``First one''.

@itemize
@anchor{a0}
@item
@anchor{a1}
First one
@end itmize

PS : Please keep me in the Cc: or To: as I am not subscribed to this list.