Today, a Supplement to the Incentive Auction rules Option and Discussion Paper, commonly referred to as Appendix C, contained in Expanding the Economic and Innovation Opportunities of Spectrum Through Incentive Auctions, Notice of Proposed Rulemaking, Docket No. 12-268, 27 FCC Rcd 12357 (2012) was released and is available in the docket.  This Supplement, prepared by the Commission’s outside auction experts, Auctionomics and Power Auctions, provides additional details about several of the Forward Auction proposals discussed in the NPRM.  It provides additional details about several of the more novel aspects discussed in connection with the Forward Auction, including the use of intra-round bidding, managing the shifting of demand between categories of licenses and the forward auction closing rule.