Partial sales do risk promoting unnecessary supply into a market where there is, essentially, insufficient demand. So if you don't get that clearance, what that is suggesting is that the market as a whole doesn't have the level of demand that the market regulator says, "OK, well, we'll release those units for sale in that case." So that would be detrimental to the overall functioning and purpose of the emissions trading scheme. It's worth noting that the European ETS has exactly the same functionality, so they have this sort of no-sale provision if the lowest price doesn't clear. So if the market doesn't clear, then that doesn't go ahead. They've had 1,000 auctions, approximately, in the history of the European Union ETS, and only on three occasions out of 1,000 has the price failed to clear and no units get sold into the system. So we are mirroring a much more well-established, much larger market, and in a tiny fraction of a fraction of their auctions has there ever been a situation in which they've chosen not to sell those units into the market because the price hasn't, essentially, been sufficient to demand it.