I just tried the following database command:
   SEL * IN BITEARN WHERE COUNTRY IS IR
 
LISTSERV told me "IR is assumed to be Ireland" and proceeded to list all
the IE entries.  I rephrased as:
   SEL * IN BITEARN WHERE COUNTRY IS IRAN
and was told that "Iran is not a valid country!"
 
IREARN is a node with :country=IR.  Can anybody explain what's going on?
 
Thanks
Bill