The delegate that manages bids. A bid puts PU's in the player's treasury. It can be set at the start of the game. The placeBid delegate actually places the units, if omitted the money stays in the treasury.
There is no requirement that bid take place first, a bid can be put into the sequence allowing a player a fixed amount of income each turn. The bid can be limited to a given number of turns.
<delegate name="bid" javaClass="games.strategy.triplea.delegate.BidPurchaseDelegate" display="Bid Purchase"/>
<step name="americanBid" delegate="bid" player="Americans" maxRunCount="1"/>