'match_domain' is a string variable which 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. 

 See help on the 'domains' command for an explanation of archie
 psuedo-domains.

 The syntax for this command is:

	set match_domain <pseudo-domain>[[':'<pseduo-domain>]...]

 therefore you could say

	set match_domain 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.  See the "domains" command for a further explanation and list of
 domains supported.