PITCH 2.X Messages

                
    0xB1        Time Reference 
    0x20        Time
    0x97        Unit Clear
    0xBC        Transaction Begin
    0xBD        Transaction End
    0xFC        Complex Options Futures Instrument Definition 
    0x2F        Symbol Mapping
    0x21        Add Order - Long
    0x22        Add Order - Short
    0x2F        Add Order - Expanded
    0x23        Order Executed
    0x24        Order Executed at Price/Size
    0x25        Reduce Size - Long
    0x26        Reduce Size - Short
    0x27        Modify Order - Long
    0x28        Modify Order - Short
    0x29        Delete Order
    0x2A        Trade - Long
    0x2B        Trade - Short
    0xFD        Trade (Futures Options)
    0xAD        Auction Notification
    0xAE        Auction Cancel
    0xAF        Auction Trade
    0x31        Trading Status
    0xD1        Options Auction Update
    0x96        Auction Summary
    0x2D        End of Session