The BGP Route-Map Policy List Support feature introduces new functionality to Border Gateway Protocol (BGP) route maps. This feature adds the capability for a network operator to group route map match clauses into named lists called policy lists. A policy list functions like a macro. When a policy list is referenced in a route map, all of the match clauses are evaluated and processed as if they had been configured directly in the route map. This enhancement simplifies the configuration of BGP routing policy in medium-size and large networks because a network operator can preconfigure policy lists with groups of match clauses and then reference these policy lists within different route maps. The network operator no longer needs to manually reconfigure each recurring group of match clauses that occur in multiple route map entries.

For further information click this link.

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ftbgprpl.html

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