The following are snippets of Peering Policy Clauses found in the Peering Rules of the Road - A Brief Study of Peering Policies study.  Clauses were categorized and put into rough categories for comparison.

Here are the clauses we categorized as requirements for multi-exit discriminators

Excerpts from Peering Polices

MEDs

tw telecom removes MED information by default. Requests for tw telecom to accept MEDs must be sent to peering@twtelecom.net for review. – TW Telecom

Potential peer must honor metrics attached to routing announcements. – CableVision