This fixes a quirk of selective-bidding auction where each bid amount can only be claimed by a single person. That's fine in normal auctions, but in a selective-bid auction, it means Alice can bid 5 coins on lot X and lot Y, but Alice can't bid 5 coins on lot X while Bob bids 5 coins on lot Y.
Amend Regulation AM0 by, as a single amendment: { In the paragraph beginning "BIDDING:", deleting "specifying a number of the auction's currency as eir bid not equal to the bid of another player" After that paragraph, inserting the following paragraph: { EXCLUSIVITY: Bids are grouped into classes. Unless otherwise specified, all bids are in a single class. A bid CANNOT be made if, in the class it would be in, another bid already exists with the bid amount as the hypothetical bid. } } Amend Regulation AM5 by inserting the following as a new list item after the one starting with "Bidding messages": "One bid class exists for each lot, with bids falling into the class for the specified lot." -- Jason Cobb Assessor, Rulekeepor, Stonemason