can anyone tell me about the use of wildcard characters? such as "***"?

[Anonymous]

i'm having issues with getting dynamic content searched in csw policies.  i need to be able to search on a ServerID in a URL but the match for it must be strict.  if there are any characters missing then i need a "reply-error" sent.  i was thinking that wildcard characters would help in the csw rule or policy in order to negate anything that doesn't strictly match a ServerID.

any help would be greatly appreciated!!!