# TSX Alpha-X / Alpha DRK Enumerations

Alpha-X is a visible order book that has all of the same order types and trading functionalities currently available on TSX Alpha Exchange, and features the new Smart Limit™ order type, Alpha DRK is a fully dark order book with a comprehensive suite of pegged (Primary, Market, Minimum Price Improvement, Midpoint) market and limit order types, and has the new Smart Peg™ order type.

The following fields have Enumerations:

* AGGRESSOR_SIDE - Indicates whether a trade resulted from an incoming buy or sell order.
* BOOK_TYPE - Type of order book or trading mechanism through which a trade was executed.
* BYPASS - Identifies whether the trade resulted from a Bypass order
* MKT_PHASE - Indicates the instrument’s current market phase, as specified by the trading venue
* ODD_LOT - Indicates whether a trade was an odd lot
* ORDER_TYPE - Type of order.
* SPECIAL_TERMS - Indicates any non-standard settlement / execution terms associated with a trade
* TRADE_PERIOD - Market period during which a trade was executed.
* TRADE_TYPE - Type of trade
* UPDATE_TYPE - Type of update

#### AGGRESSOR_SIDE - Enumeration

| Enumeration ID   | Enumeration Description                          |
|------------------|--------------------------------------------------|
| ‘””’             | Undefined (e.g. auction trades, off-book trades) |
| B                | Buy                                              |
| S                | Sell                                             |

#### BOOK_TYPE - Enumeration

|   Enumeration ID | Enumeration Description   |
|------------------|---------------------------|
|                0 | Lit order book            |
|                1 | Off-book                  |
|                2 | Dark book                 |
|                3 | Odd lot book              |
|                4 | Special terms book        |

#### BYPASS - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| ‘””’             | Not a bypass trade        |
| Y                | Bypass trade              |

#### MKT_PHASE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| AS               | Halted                    |
| C                | Closed                    |
| F                | Extended hours close      |
| I                | Inhibited                 |
| IS               | Inhibited, halted         |
| N                | Extended hours CXLs       |
| O                | Opening                   |
| P                | Pre-open                  |
| S                | Open                      |

#### ODD_LOT - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| ‘””’             | Board lot                 |
| Y                | Odd lot                   |

#### ORDER_TYPE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| L                | Limit order               |
| M                | Market order              |

#### SPECIAL_TERMS - Enumeration

| Enumeration ID   | Enumeration Description                |
|------------------|----------------------------------------|
| ‘””’             | No special terms (standard settlement) |
| C                | Cash                                   |
| CT               | Cash today                             |
| DC               | Derivative-related contingent trade    |
| DD               | Delayed delivery                       |
| NN               | Non-net                                |
| NR               | Non-resident                           |

#### TRADE_PERIOD - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| -                | Regular trading           |

#### TRADE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description       |
|------------------|-------------------------------|
| ‘””’             | Regular trade                 |
| 7                | NAV cross                     |
| C                | Contingent cross              |
| G                | VWAP cross                    |
| I                | Derivative-related cross      |
| J                | Regular (intentional) cross   |
| O                | Basis cross                   |
| S                | Special Trading Session cross |
| X                | Internal cross                |

#### UPDATE_TYPE - Enumeration

| Enumeration ID   | Enumeration Description   |
|------------------|---------------------------|
| A                | Add                       |
| D                | Delete                    |
| F                | Fill                      |
| M                | Modify                    |
| P                | Partial fill              |