!!! Overview
LDAP filters are defined in the following RFCs (Request for Comments):

* [RFC 1588]: A StringRepresentation of LDAP Search Filters
* [RFC 1960]: A String Representation of LDAP Search Filters (Obsoletes: [RFC 1558] Obsoleted by: [RFC 2254] )
* [RFC 2254]: [LDAP String Representation of Search Filters] (Obsoletes:  [RFC 1960])
* [RFC 3687]: [Component Matching Rules|ftp://ftp.rfc-editor.org/in-notes/rfc3687.txt]
* [RFC 4515]: [LDAP String Representation of Search Filters] (Obsoletes: [RFC 2254])


!! More Information
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