For the type of order in the trade history, that doesnt really make sense.. because you can't have a BUY without a SELL.. its a "trade", ie, one person is selling and another it buying a certain number of units at a certain rate. The "type" for every trade is both a buy AND a sell.
I guess publio wanted to know if the trade was based on someone buying into an existing order, or selling into an existing order. This would certainly be informative, although anyone keeping a reasonable track of the order book can figure it our anyway (one good thing about the relatively low liquidity).