 The "Domain" parameter allows you to restrict the scope
 of your search by only matching results at those sites which are in the
 pseudo-domain list you have set.
 
        entering:    ca:mx:uk
 
 which would restrict your search to sites in Canada ("ca"), Mexico
 ("mx") and the United Kingdom ("uk")
 
 Comparisons between the domain restrictions given and any site name are
 case insensitive and performed from right to left. Therefore the
 pseudo-domain list "EDU:va.us" will match any sites ending in "edu" or
 in "va.us" (educational US sites and some of those in Virginia).
 
 DNS names to any level may be supplied. You may use any combination of
 real DNS domains and pseudo-domains to specify the restriction criteria,
 however, any pseudo-domain specified must be supported by the current
 server.

 Besides real domains you may use the following pseudo-domains:

africa          Africa               za
anzac           OZ & New Zealand     au:nz
asia            Asia                 kr:hk:sg:jp:cn:my:tw:in
centralamerica  Central America      sv:gt:hn
easteurope      Eastern Europe       bg:cs:cz:hr:hu:pl:ro:sk:si
europe          Europe               westeurope:easteurope:scandinavia
mideast         Middle East          eg:.il:kw:sa
northamerica    North America        usa:ca:mx
scandinavia     Scandinavia          no:dk:se:fi:ee:is
southamerica    South American       ar:bo:br:cl:co:cr:cu:ec:pe:ve
usa             United States        edu:com:mil:gov:us
westeurope      Western Europe       westeurope1:westeurope2
westeurope1                          de:ie:pt:es:uk:at:fr:it:be:nl
westeurope2                          ch:cy:gr:li:lu:tr
world           The World            world1:world2
world1                               europe:scandinavia:northamerica
world2                               southamerica:mideast:africa:anzac:as
