MQL5 ReferenceConstants, Enumerations and StructuresEnvironment StateSymbol Properties

Symbol Properties

To obtain the current market information there are several functions: SymbolInfoInteger(), SymbolInfoDouble() and SymbolInfoString(). The first parameter is the symbol name, the values of the second function parameter can be one of the identifiers of ENUM_SYMBOL_INFO_INTEGER, ENUM_SYMBOL_INFO_DOUBLE and ENUM_SYMBOL_INFO_STRING.

For function SymbolInfoInteger()

ENUM_SYMBOL_INFO_INTEGER

Identifier	Description	Type
SYMBOL_SUBSCRIPTION_DELAY	Symbol data arrives with a delay. The property can be requested only for symbols selected in MarketWatch (SYMBOL_SELECT = true). The ERR_MARKET_NOT_SELECTED (4302) error is generated for other symbols	bool
SYMBOL_SECTOR	The sector of the economy to which the asset belongs	ENUM_SYMBOL_SECTOR
SYMBOL_INDUSTRY	The industry or the economy branch to which the symbol belongs	ENUM_SYMBOL_INDUSTRY
SYMBOL_CUSTOM	It is a custom symbol – the symbol has been created synthetically based on other symbols from the Market Watch and/or external data sources	bool
SYMBOL_BACKGROUND_COLOR	The color of the background used for the symbol in Market Watch	color
SYMBOL_CHART_MODE	The price type used for generating symbols bars, i.e. Bid or Last	ENUM_SYMBOL_CHART_MODE
SYMBOL_EXIST	Symbol with this name exists	bool
SYMBOL_SELECT	Symbol is selected in Market Watch	bool
SYMBOL_VISIBLE	Symbol is visible in Market Watch. Some symbols (mostly, these are cross rates required for calculation of margin requirements or profits in deposit currency) are selected automatically, but may not be visible in Market Watch. To be displayed such symbols have to be explicitly selected.	bool
SYMBOL_SESSION_DEALS	Number of deals in the current session	long
SYMBOL_SESSION_BUY_ORDERS	Number of Buy orders at the moment	long
SYMBOL_SESSION_SELL_ORDERS	Number of Sell orders at the moment	long
SYMBOL_VOLUME	Volume of the last deal	long
SYMBOL_VOLUMEHIGH	Maximal day volume	long
SYMBOL_VOLUMELOW	Minimal day volume	long
SYMBOL_TIME	Time of the last quote	datetime
SYMBOL_TIME_MSC	Time of the last quote in milliseconds since 1970.01.01	long
SYMBOL_DIGITS	Digits after a decimal point	int
SYMBOL_SPREAD_FLOAT	Indication of a floating spread	bool
SYMBOL_SPREAD	Spread value in points	int
SYMBOL_TICKS_BOOKDEPTH	Maximal number of requests shown in Depth of Market. For symbols that have no queue of requests, the value is equal to zero.	int
SYMBOL_TRADE_CALC_MODE	Contract price calculation mode	ENUM_SYMBOL_CALC_MODE
SYMBOL_TRADE_MODE	Order execution type	ENUM_SYMBOL_TRADE_MODE
SYMBOL_START_TIME	Date of the symbol trade beginning (usually used for futures)	datetime
SYMBOL_EXPIRATION_TIME	Date of the symbol trade end (usually used for futures)	datetime
SYMBOL_TRADE_STOPS_LEVEL	Minimal indention in points from the current close price to place Stop orders	int
SYMBOL_TRADE_FREEZE_LEVEL	Distance to freeze trade operations in points	int
SYMBOL_TRADE_EXEMODE	Deal execution mode	ENUM_SYMBOL_TRADE_EXECUTION
SYMBOL_SWAP_MODE	Swap calculation model	ENUM_SYMBOL_SWAP_MODE
SYMBOL_SWAP_ROLLOVER3DAYS	The day of week to charge 3-day swap rollover	ENUM_DAY_OF_WEEK
SYMBOL_MARGIN_HEDGED_USE_LEG	Calculating hedging margin using the larger leg (Buy or Sell)	bool
SYMBOL_EXPIRATION_MODE	Flags of allowed order expiration modes	int
SYMBOL_FILLING_MODE	Flags of allowed order filling modes	int
SYMBOL_ORDER_MODE	Flags of allowed order types	int
SYMBOL_ORDER_GTC_MODE	Expiration of Stop Loss and Take Profit orders, if SYMBOL_EXPIRATION_MODE=SYMBOL_EXPIRATION_GTC (Good till canceled)	ENUM_SYMBOL_ORDER_GTC_MODE
SYMBOL_OPTION_MODE	Option type	ENUM_SYMBOL_OPTION_MODE
SYMBOL_OPTION_RIGHT	Option right (Call/Put)	ENUM_SYMBOL_OPTION_RIGHT

For function SymbolInfoDouble()

ENUM_SYMBOL_INFO_DOUBLE

Identifier	Description	Type
SYMBOL_BID	Bid - best sell offer	double
SYMBOL_BIDHIGH	Maximal Bid of the day	double
SYMBOL_BIDLOW	Minimal Bid of the day	double
SYMBOL_ASK	Ask - best buy offer	double
SYMBOL_ASKHIGH	Maximal Ask of the day	double
SYMBOL_ASKLOW	Minimal Ask of the day	double
SYMBOL_LAST	Price of the last deal	double
SYMBOL_LASTHIGH	Maximal Last of the day	double
SYMBOL_LASTLOW	Minimal Last of the day	double
SYMBOL_VOLUME_REAL	Volume of the last deal	double
SYMBOL_VOLUMEHIGH_REAL	Maximum Volume of the day	double
SYMBOL_VOLUMELOW_REAL	Minimum Volume of the day	double
SYMBOL_OPTION_STRIKE	The strike price of an option. The price at which an option buyer can buy (in a Call option) or sell (in a Put option) the underlying asset, and the option seller is obliged to sell or buy the appropriate amount of the underlying asset.	double
SYMBOL_POINT	Symbol point value	double
SYMBOL_TRADE_TICK_VALUE	Value of SYMBOL_TRADE_TICK_VALUE_PROFIT	double
SYMBOL_TRADE_TICK_VALUE_PROFIT	Calculated tick price for a profitable position	double
SYMBOL_TRADE_TICK_VALUE_LOSS	Calculated tick price for a losing position	double
SYMBOL_TRADE_TICK_SIZE	Minimal price change	double
SYMBOL_TRADE_CONTRACT_SIZE	Trade contract size	double
SYMBOL_TRADE_ACCRUED_INTEREST	Accrued interest – accumulated coupon interest, i.e. part of the coupon interest calculated in proportion to the number of days since the coupon bond issuance or the last coupon interest payment	double
SYMBOL_TRADE_FACE_VALUE	Face value – initial bond value set by the issuer	double
SYMBOL_TRADE_LIQUIDITY_RATE	Liquidity Rate is the share of the asset that can be used for the margin.	double
SYMBOL_VOLUME_MIN	Minimal volume for a deal	double
SYMBOL_VOLUME_MAX	Maximal volume for a deal	double
SYMBOL_VOLUME_STEP	Minimal volume change step for deal execution	double
SYMBOL_VOLUME_LIMIT	Maximum allowed aggregate volume of an open position and pending orders in one direction (buy or sell) for the symbol. For example, with the limitation of 5 lots, you can have an open buy position with the volume of 5 lots and place a pending order Sell Limit with the volume of 5 lots. But in this case you cannot place a Buy Limit pending order (since the total volume in one direction will exceed the limitation) or place Sell Limit with the volume more than 5 lots.	double
SYMBOL_SWAP_LONG	Long swap value	double
SYMBOL_SWAP_SHORT	Short swap value	double
SYMBOL_SWAP_SUNDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from SUNDAY to the next day. There following values are supported: 0 – no swap is charged 1 – single swap 3 – triple swap	double
SYMBOL_SWAP_MONDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Monday to Tuesday	double
SYMBOL_SWAP_TUESDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Tuesday to Wednesday	double
SYMBOL_SWAP_WEDNESDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Wednesday to Thursday	double
SYMBOL_SWAP_THURSDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Thursday to Friday	double
SYMBOL_SWAP_FRIDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Friday to Saturday	double
SYMBOL_SWAP_SATURDAY	Swap calculation ratio (SYMBOL_SWAP_LONG or SYMBOL_SWAP_SHORT) for overnight positions rolled over from Saturday to Sunday	double
SYMBOL_MARGIN_INITIAL	Initial margin means the amount in the margin currency required for opening a position with the volume of one lot. It is used for checking a client's assets when he or she enters the market. The SymbolInfoMarginRate() function provides data on the amount of charged margin depending on the order type and direction.	double
SYMBOL_MARGIN_MAINTENANCE	The maintenance margin. If it is set, it sets the margin amount in the margin currency of the symbol, charged from one lot. It is used for checking a client's assets when his/her account state changes. If the maintenance margin is equal to 0, the initial margin is used. The SymbolInfoMarginRate() function provides data on the amount of charged margin depending on the order type and direction.	double
SYMBOL_SESSION_VOLUME	Summary volume of current session deals	double
SYMBOL_SESSION_TURNOVER	Summary turnover of the current session	double
SYMBOL_SESSION_INTEREST	Summary open interest	double
SYMBOL_SESSION_BUY_ORDERS_VOLUME	Current volume of Buy orders	double
SYMBOL_SESSION_SELL_ORDERS_VOLUME	Current volume of Sell orders	double
SYMBOL_SESSION_OPEN	Open price of the current session	double
SYMBOL_SESSION_CLOSE	Close price of the current session	double
SYMBOL_SESSION_AW	Average weighted price of the current session	double
SYMBOL_SESSION_PRICE_SETTLEMENT	Settlement price of the current session	double
SYMBOL_SESSION_PRICE_LIMIT_MIN	Minimal price of the current session	double
SYMBOL_SESSION_PRICE_LIMIT_MAX	Maximal price of the current session	double
SYMBOL_MARGIN_HEDGED	Contract size or margin value per one lot of hedged positions (oppositely directed positions of one symbol). Two margin calculation methods are possible for hedged positions. The calculation method is defined by the broker. Basic calculation: If the initial margin (SYMBOL_MARGIN_INITIAL) is specified for a symbol, the hedged margin is specified as an absolute value (in monetary terms). If the initial margin is not specified (equal to 0), SYMBOL_MARGIN_HEDGED is equal to the size of the contract, that will be used to calculate the margin by the appropriate formula in accordance with the type of the financial instrument (SYMBOL_TRADE_CALC_MODE). Calculation for the largest position: The SYMBOL_MARGIN_HEDGED value is not taken into account. The volume of all short and all long positions of a symbol is calculated. For each direction, a weighted average open price and a weighted average rate of conversion to the deposit currency is calculated. Next, using the appropriate formula chosen in accordance with the symbol type (SYMBOL_TRADE_CALC_MODE) the margin is calculated for the short and the long part. The largest one of the values is used as the margin.	double
SYMBOL_PRICE_CHANGE	Change of the current price relative to the end of the previous trading day in %	double
SYMBOL_PRICE_VOLATILITY	Price volatility in %	double
SYMBOL_PRICE_THEORETICAL	Theoretical option price	double
SYMBOL_PRICE_DELTA	Option/warrant delta shows the value the option price changes by, when the underlying asset price changes by 1	double
SYMBOL_PRICE_THETA	Option/warrant theta shows the number of points the option price is to lose every day due to a temporary breakup, i.e. when the expiration date approaches	double
SYMBOL_PRICE_GAMMA	Option/warrant gamma shows the change rate of delta – how quickly or slowly the option premium changes	double
SYMBOL_PRICE_VEGA	Option/warrant vega shows the number of points the option price changes by when the volatility changes by 1%	double
SYMBOL_PRICE_RHO	Option/warrant rho reflects the sensitivity of the theoretical option price to the interest rate changing by 1%	double
SYMBOL_PRICE_OMEGA	Option/warrant omega. Option elasticity shows a relative percentage change of the option price by the percentage change of the underlying asset price	double
SYMBOL_PRICE_SENSITIVITY	Option/warrant sensitivity shows by how many points the price of the option's underlying asset should change so that the price of the option changes by one point	double

For function SymbolInfoString()

ENUM_SYMBOL_INFO_STRING

Identifier	Description	Type
SYMBOL_BASIS	The underlying asset of a derivative	string
SYMBOL_CATEGORY	The name of the sector or category to which the financial symbol belongs	string
SYMBOL_COUNTRY	The country to which the financial symbol belongs	string
SYMBOL_SECTOR_NAME	The sector of the economy to which the financial symbol belongs	string
SYMBOL_INDUSTRY_NAME	The industry branch or the industry to which the financial symbol belongs	string
SYMBOL_CURRENCY_BASE	Basic currency of a symbol	string
SYMBOL_CURRENCY_PROFIT	Profit currency	string
SYMBOL_CURRENCY_MARGIN	Margin currency	string
SYMBOL_BANK	Feeder of the current quote	string
SYMBOL_DESCRIPTION	Symbol description	string
SYMBOL_EXCHANGE	The name of the exchange in which the financial symbol is traded	string
SYMBOL_FORMULA	The formula used for the custom symbol pricing. If the name of a financial symbol used in the formula starts with a digit or contains a special character (">" ", ".", "-", "&", "#" and so on) quotation marks should be used around this symbol name. Synthetic symbol: "@ESU19"/EURCAD Calendar spread: "Si-9.13"-"Si-6.13" Euro index: 34.38805726 * pow(EURUSD,0.3155) * pow(EURGBP,0.3056) * pow(EURJPY,0.1891) * pow(EURCHF,0.1113) * pow(EURSEK,0.0785)	string
SYMBOL_ISIN	The name of a symbol in the ISIN system (International Securities Identification Number). The International Securities Identification Number is a 12-digit alphanumeric code that uniquely identifies a security. The presence of this symbol property is determined on the side of a trade server.	string
SYMBOL_PAGE	The address of the web page containing symbol information. This address will be displayed as a link when viewing symbol properties in the terminal	string
SYMBOL_PATH	Path in the symbol tree	string

A symbol price chart can be based on Bid or Last prices. The price selected for symbol charts also affects the generation and display of bars in the terminal. Possible values of the SYMBOL_CHART_MODE property are described in ENUM_SYMBOL_CHART_MODE

ENUM_SYMBOL_CHART_MODE

Identifier	Description
SYMBOL_CHART_MODE_BID	Bars are based on Bid prices
SYMBOL_CHART_MODE_LAST	Bars are based on Last prices

For each symbol several expiration modes of pending orders can be specified. A flag is matched to each mode. Flags can be combined using the operation of logical OR (|), for example, SYMBOL_EXPIRATION_GTC|SYMBOL_EXPIRATION_SPECIFIED. In order to check whether a certain mode is allowed for the symbol, the result of the logical AND (&) should be compared to the mode flag.

If flag SYMBOL_EXPIRATION_SPECIFIED is specified for a symbol, then while sending a pending order, you may specify the moment this pending order is valid till.

Identifier	Value	Description
SYMBOL_EXPIRATION_GTC	1	The order is valid during the unlimited time period, until it is explicitly canceled
SYMBOL_EXPIRATION_DAY	2	The order is valid till the end of the day
SYMBOL_EXPIRATION_SPECIFIED	4	The expiration time is specified in the order
SYMBOL_EXPIRATION_SPECIFIED_DAY	8	The expiration date is specified in the order

Example:

//+------------------------------------------------------------------+
//| Checks if the specified expiration mode is allowed               |
//+------------------------------------------------------------------+
bool IsExpirationTypeAllowed(string symbol,int exp_type)
  {
//--- Obtain the value of the property that describes allowed expiration modes
   int expiration=(int)SymbolInfoInteger(symbol,SYMBOL_EXPIRATION_MODE);
//--- Return true, if mode exp_type is allowed
   return((expiration&exp_type)==exp_type);
  }

If the SYMBOL_EXPIRATION_MODE property is set to SYMBOL_EXPIRATION_GTC (good till canceled), the expiration of pending orders, as well as of Stop Loss/Take Profit orders should be additionally set using the ENUM_SYMBOL_ORDER_GTC_MODE enumeration.

ENUM_SYMBOL_ORDER_GTC_MODE

Identifier	Description
SYMBOL_ORDERS_GTC	Pending orders and Stop Loss/Take Profit levels are valid for an unlimited period until their explicit cancellation
SYMBOL_ORDERS_DAILY	Orders are valid during one trading day. At the end of the day, all Stop Loss and Take Profit levels, as well as pending orders are deleted.
SYMBOL_ORDERS_DAILY_EXCLUDING_STOPS	When a trade day changes, only pending orders are deleted, while Stop Loss and Take Profit levels are preserved.

When sending an order, we can specify the filling policy of a volume set in the order. The possible volume-based order execution options for each symbol are specified in the table. It is possible to set several modes for each instrument via a combination of flags. The combination of flags is expressed by the logical OR (|) operation, for example SYMBOL_FILLING_FOK|SYMBOL_FILLING_IOC. To check if a specific mode is allowed for an instrument, compare the logical AND (&) result with the mode flag - example.

Fill policy	ID	Value	Description
Fill or Kill	SYMBOL_FILLING_FOK	1	An order can be executed in the specified volume only. If the necessary amount of a financial instrument is currently unavailable in the market, the order will not be executed. The desired volume can be made up of several available offers. When sending an order, the ORDER_FILLING_FOK filling type should be specified for this policy. The possibility of using FOK orders is determined at the trade server.
Immediate or Cancel	SYMBOL_FILLING_IOC	2	A trader agrees to execute a deal with the volume maximally available in the market within that indicated in the order. If the request cannot be filled completely, an order with the available volume will be executed, and the remaining volume will be canceled. When sending an order, the ORDER_FILLING_IOC filling type should be specified for this policy. The possibility of using IOC orders is determined at the trade server.
Passive	SYMBOL_FILLING_BOC	4	The BOC (Book-or-Cancel) policy assumes that an order can only be placed in the Depth of Market and cannot be immediately executed. If the order can be executed immediately when placed, then it is canceled. In fact, this execution policy can only be specified when the price of the placed order is to be worse than the current market. BoC orders are used to implement passive trading, so that the order is not executed immediately when placed and does not affect current liquidity. Only limit and stop limit orders are supported, i.e. the SYMBOL_ORDER_MODE flag should contain the SYMBOL_ORDER_LIMIT and/or SYMBOL_ORDER_STOP_LIMIT values.
Return	No identifier		In case of partial filling, a market or limit order with remaining volume is not canceled but processed further. When sending an order, the ORDER_FILLING_RETURN filling type should be specified for this policy. Return orders are not allowed in the Market Execution mode (market execution — SYMBOL_TRADE_EXECUTION_MARKET).

When sending a trade request using the OrderSend() function, the necessary volume execution policy can be set in the type_filling field, namely in the special MqlTradeRequest structure. The values from the ENUM_ORDER_TYPE_FILLING enumeration are available. If no filling type is specified, ORDER_FILLING_RETURN is automatically set in the trade request. The ORDER_FILLING_RETURN filling type is enabled in any execution mode except for "Market execution" (SYMBOL_TRADE_EXECUTION_MARKET).

While sending a trade request for execution at the current time (time in force), we should keep in mind that financial markets provide no guarantee that the entire requested volume is available for a certain financial instrument at the desired price. Therefore, trading operations in real time are regulated using the price and volume execution modes. The modes, or execution policies, define the rules for cases when the price has changed or the requested volume cannot be completely fulfilled at the moment.

Execution mode	Description	The value in ENUM_SYMBOL_TRADE_EXECUTION
Execution mode (Request Execution)	Executing a market order at the price previously received from the broker. Prices for a certain market order are requested from the broker before the order is sent. Upon receiving the prices, order execution at the given price can be either confirmed or rejected.	SYMBOL_TRADE_EXECUTION_REQUEST
Instant Execution	Executing a market order at the specified price immediately. When sending a trade request to be executed, the platform automatically adds the current prices to the order. If the broker accepts the price, the order is executed. If the broker does not accept the requested price, a "Requote" is sent — the broker returns prices, at which this order can be executed.	SYMBOL_TRADE_EXECUTION_INSTANT
Market Execution	A broker makes a decision about the order execution price without any additional discussion with the trader. Sending the order in such a mode means advance consent to its execution at this price.	SYMBOL_TRADE_EXECUTION_MARKET
Exchange Execution	Trade operations are executed at the prices of the current market offers.	SYMBOL_TRADE_EXECUTION_EXCHANGE

Before sending an order with the current execution time, for the correct setting of the ORDER_TYPE_FILLING value (volume execution type), you can use the SymbolInfoInteger() function with each financial instrument to get the SYMBOL_FILLING_MODE property value, which shows volume execution types allowed for the symbol as a combination of flags. The ORDER_FILLING_RETURN filling type is enabled at all times except for the "Market execution" mode (SYMBOL_TRADE_EXECUTION_MARKET).

The use of filling types depending on the execution mode can be shown as the following table:

Type of Execution\Fill Policy	Fill or Kill (FOK ORDER_FILLING_FOK)	Immediate or Cancel (IOC ORDER_FILLING_IOC)	Return (Return ORDER_FILLING_RETURN)
Instant Execution (SYMBOL_TRADE_EXECUTION_INSTANT)	+ (regardless of a symbol setting)	+ (regardless of a symbol setting)	+ (always)
Request Execution SYMBOL_TRADE_EXECUTION_REQUEST	+ (regardless of a symbol setting)	+ (regardless of a symbol setting)	+ (always)
Market Execution SYMBOL_TRADE_EXECUTION_MARKET	+ (set in the symbol settings)	+ (set in the symbol settings)	- (disabled regardless of the symbol settings)
Exchange Execution SYMBOL_TRADE_EXECUTION_EXCHANGE	+ (set in the symbol settings)	+ (set in the symbol settings)	+ (always)

In case of pending orders, the ORDER_FILLING_RETURN filling type should be used regardless of an execution type (SYMBOL_TRADE_EXEMODE), since such orders are not meant for execution at the time of sending. When using pending orders, a trader agrees in advance that, when conditions for a deal on this order are met, the broker will use the filling type supported by the exchange.

Example:

//+------------------------------------------------------------------+
//| check if a given filling mode is allowed                         |
//+------------------------------------------------------------------+
bool IsFillingTypeAllowed(string symbol,int fill_type)
  {
//--- get the value of the property describing the filling mode
   int filling=(int)SymbolInfoInteger(symbol,SYMBOL_FILLING_MODE);
//--- return 'true' if the fill_type mode is allowed
   return((filling&fill_type)==fill_type);
  }

When sending a trade request using OrderSend() function, an order type from ENUM_ORDER_TYPE enumeration should be specified for some operations. Not all types of orders may be allowed for a specific symbol. SYMBOL_ORDER_MODE property describes the flags of the allowed order types.

Identifier	Value	Description
SYMBOL_ORDER_MARKET	1	Market orders are allowed (Buy and Sell)
SYMBOL_ORDER_LIMIT	2	Limit orders are allowed (Buy Limit and Sell Limit)
SYMBOL_ORDER_STOP	4	Stop orders are allowed (Buy Stop and Sell Stop)
SYMBOL_ORDER_STOP_LIMIT	8	Stop-limit orders are allowed (Buy Stop Limit and Sell Stop Limit)
SYMBOL_ORDER_SL	16	Stop Loss is allowed
SYMBOL_ORDER_TP	32	Take Profit is allowed
SYMBOL_ORDER_CLOSEBY	64	Close By operation is allowed, i.e. closing a position by another open position on the same instruments but in the opposite direction. The property is set for accounts with the hedging accounting system (ACCOUNT_MARGIN_MODE_RETAIL_HEDGING)

Example:

//+------------------------------------------------------------------+
//| The function prints out order types allowed for a symbol         |
//+------------------------------------------------------------------+
void Check_SYMBOL_ORDER_MODE(string symbol)
  {
//--- receive the value of the property describing allowed order types
   int symbol_order_mode=(int)SymbolInfoInteger(symbol,SYMBOL_ORDER_MODE);
//--- check for market orders (Market Execution)
   if((SYMBOL_ORDER_MARKET&symbol_order_mode)==SYMBOL_ORDER_MARKET)
      Print(symbol+": Market orders are allowed (Buy and Sell)");
//--- check for Limit orders
   if((SYMBOL_ORDER_LIMIT&symbol_order_mode)==SYMBOL_ORDER_LIMIT)
      Print(symbol+": Buy Limit and Sell Limit orders are allowed");
//--- check for Stop orders
   if((SYMBOL_ORDER_STOP&symbol_order_mode)==SYMBOL_ORDER_STOP)
      Print(symbol+": Buy Stop and Sell Stop orders are allowed");
//--- check for Stop Limit orders
   if((SYMBOL_ORDER_STOP_LIMIT&symbol_order_mode)==SYMBOL_ORDER_STOP_LIMIT)
      Print(symbol+": Buy Stop Limit and Sell Stop Limit orders are allowed");
//--- check if placing a Stop Loss orders is allowed
   if((SYMBOL_ORDER_SL&symbol_order_mode)==SYMBOL_ORDER_SL)
      Print(symbol+": Stop Loss orders are allowed");
//--- check if placing a Take Profit orders is allowed
   if((SYMBOL_ORDER_TP&symbol_order_mode)==SYMBOL_ORDER_TP)
      Print(symbol+": Take Profit orders are allowed");
//--- check if closing a position by an opposite one is allowed
   if((SYMBOL_ORDER_TP&symbol_order_mode)==SYMBOL_ORDER_CLOSEBY)
      Print(symbol+": Close by allowed");
//---
  }

The ENUM_SYMBOL_CALC_MODE enumeration is used for obtaining information about how the margin requirements for a symbol are calculated.

ENUM_SYMBOL_CALC_MODE

Identifier	Description	Formula
SYMBOL_CALC_MODE_FOREX	Forex mode - calculation of profit and margin for Forex	Margin: Lots * Contract_Size / Leverage * Margin_Rate Profit: (close_price - open_price) * Contract_Size*Lots
SYMBOL_CALC_MODE_FOREX_NO_LEVERAGE	Forex No Leverage mode – calculation of profit and margin for Forex symbols without taking into account the leverage	Margin: Lots * Contract_Size * Margin_Rate Profit: (close_price - open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_FUTURES	Futures mode - calculation of margin and profit for futures	Margin: Lots * InitialMargin * Margin_Rate Profit: (close_price - open_price) * TickPrice / TickSize*Lots
SYMBOL_CALC_MODE_CFD	CFD mode - calculation of margin and profit for CFD	Margin: Lots * ContractSize * MarketPrice * Margin_Rate Profit: (close_price - open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_CFDINDEX	CFD index mode - calculation of margin and profit for CFD by indexes	Margin: (Lots * ContractSize * MarketPrice) * TickPrice / TickSize * Margin_Rate Profit: (close_price - open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_CFDLEVERAGE	CFD Leverage mode - calculation of margin and profit for CFD at leverage trading	Margin: (Lots * ContractSize * MarketPrice) / Leverage * Margin_Rate Profit: (close_price-open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_EXCH_STOCKS	Exchange mode – calculation of margin and profit for trading securities on a stock exchange	Margin: Lots * ContractSize * LastPrice * Margin_Rate Profit: (close_price - open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_EXCH_FUTURES	Futures mode – calculation of margin and profit for trading futures contracts on a stock exchange	Margin: Lots * InitialMargin * Margin_Rate or Lots * MaintenanceMargin * Margin_Rate Profit: (close_price - open_price) * Lots * TickPrice / TickSize
SYMBOL_CALC_MODE_EXCH_FUTURES_FORTS	FORTS Futures mode – calculation of margin and profit for trading futures contracts on FORTS. The margin may be reduced by the amount of MarginDiscount deviation according to the following rules: 1. If the price of a long position (buy order) is less than the estimated price, MarginDiscount = Lots((PriceSettle-PriceOrder)TickPrice/TickSize) 2. If the price of a short position (sell order) exceeds the estimated price, MarginDiscount = Lots((PriceOrder-PriceSettle)TickPrice/TickSize) where: PriceSettle – estimated (clearing) price of the previous session; PriceOrder – average weighted position price or open price set in the order (request); TickPrice – tick price (cost of the price change by one point) TickSize – tick size (minimum price change step)	Margin: Lots * InitialMargin * Margin_Rate or Lots * MaintenanceMargin * Margin_Rate Profit: (close_price - open_price) * Lots * TickPrice / TickSize
SYMBOL_CALC_MODE_EXCH_BONDS	Exchange Bonds mode – calculation of margin and profit for trading bonds on a stock exchange	Margin: Lots * ContractSize * FaceValue * open_price * /100 Profit: Lots * close_price * FaceValue * Contract_Size + AccruedInterest * Lots * ContractSize
SYMBOL_CALC_MODE_EXCH_STOCKS_MOEX	Exchange MOEX Stocks mode – calculation of margin and profit for trading securities on MOEX	Margin: Lots * ContractSize * LastPrice * Margin_Rate Profit: (close_price - open_price) * Contract_Size * Lots
SYMBOL_CALC_MODE_EXCH_BONDS_MOEX	Exchange MOEX Bonds mode – calculation of margin and profit for trading bonds on MOEX	Margin: Lots * ContractSize * FaceValue * open_price * /100 Profit: Lots * close_price * FaceValue * Contract_Size + AccruedInterest * Lots * ContractSize
SYMBOL_CALC_MODE_SERV_COLLATERAL	Collateral mode - a symbol is used as a non-tradable asset on a trading account. The market value of an open position is calculated based on the volume, current market price, contract size and liquidity ratio. The value is included into Assets, which are added to Equity. Open positions of such symbols increase the Free Margin amount and are used as additional margin (collateral) for open positions of tradable instruments.	Margin: no Profit: no Market Value: LotsContractSizeMarketPrice*LiqudityRate

There are several symbol trading modes. Information about trading modes of a certain symbol is reflected in the values of enumeration ENUM_SYMBOL_TRADE_MODE.

ENUM_SYMBOL_TRADE_MODE

Identifier	Description
SYMBOL_TRADE_MODE_DISABLED	Trade is disabled for the symbol
SYMBOL_TRADE_MODE_LONGONLY	Allowed only long positions
SYMBOL_TRADE_MODE_SHORTONLY	Allowed only short positions
SYMBOL_TRADE_MODE_CLOSEONLY	Allowed only position close operations
SYMBOL_TRADE_MODE_FULL	No trade restrictions

Possible deal execution modes for a certain symbol are defined in enumeration ENUM_SYMBOL_TRADE_EXECUTION.

ENUM_SYMBOL_TRADE_EXECUTION

Identifier	Description
SYMBOL_TRADE_EXECUTION_REQUEST	Execution by request
SYMBOL_TRADE_EXECUTION_INSTANT	Instant execution
SYMBOL_TRADE_EXECUTION_MARKET	Market execution
SYMBOL_TRADE_EXECUTION_EXCHANGE	Exchange execution

Methods of swap calculation at position transfer are specified in enumeration ENUM_SYMBOL_SWAP_MODE. The method of swap calculation determines the units of measure of the SYMBOL_SWAP_LONG and SYMBOL_SWAP_SHORT parameters. For example, if swaps are charged in the client deposit currency, then the values of those parameters are specified as an amount of money in the client deposit currency.

ENUM_SYMBOL_SWAP_MODE

Identifier	Description
SYMBOL_SWAP_MODE_DISABLED	Swaps disabled (no swaps)
SYMBOL_SWAP_MODE_POINTS	Swaps are charged in points
SYMBOL_SWAP_MODE_CURRENCY_SYMBOL	Swaps are charged in money in base currency of the symbol
SYMBOL_SWAP_MODE_CURRENCY_MARGIN	Swaps are charged in money in margin currency of the symbol
SYMBOL_SWAP_MODE_CURRENCY_DEPOSIT	Swaps are charged in money, in client deposit currency
SYMBOL_SWAP_MODE_CURRENCY_PROFIT	Swaps are charged in money in profit calculation currency
SYMBOL_SWAP_MODE_INTEREST_CURRENT	Swaps are charged as the specified annual interest from the instrument price at calculation of swap (standard bank year is 360 days)
SYMBOL_SWAP_MODE_INTEREST_OPEN	Swaps are charged as the specified annual interest from the open price of position (standard bank year is 360 days)
SYMBOL_SWAP_MODE_REOPEN_CURRENT	Swaps are charged by reopening positions. At the end of a trading day the position is closed. Next day it is reopened by the close price +/- specified number of points (parameters SYMBOL_SWAP_LONG and SYMBOL_SWAP_SHORT)
SYMBOL_SWAP_MODE_REOPEN_BID	Swaps are charged by reopening positions. At the end of a trading day the position is closed. Next day it is reopened by the current Bid price +/- specified number of points (parameters SYMBOL_SWAP_LONG and SYMBOL_SWAP_SHORT)

Values of the ENUM_DAY_OF_WEEK enumeration are used for specifying days of week.

ENUM_DAY_OF_WEEK

Identifier	Description
SUNDAY	Sunday
MONDAY	Monday
TUESDAY	Tuesday
WEDNESDAY	Wednesday
THURSDAY	Thursday
FRIDAY	Friday
SATURDAY	Saturday

An option is a contract, which gives the right, but not the obligation, to buy or sell an underlying asset (goods, stocks, futures, etc.) at a specified price on or before a specific date. The following enumerations describe option properties, including the option type and the right arising from it.

ENUM_SYMBOL_OPTION_RIGHT

Identifier	Description
SYMBOL_OPTION_RIGHT_CALL	A call option gives you the right to buy an asset at a specified price
SYMBOL_OPTION_RIGHT_PUT	A put option gives you the right to sell an asset at a specified price

ENUM_SYMBOL_OPTION_MODE

Identifier	Description
SYMBOL_OPTION_MODE_EUROPEAN	European option may only be exercised on a specified date (expiration, execution date, delivery date)
SYMBOL_OPTION_MODE_AMERICAN	American option may be exercised on any trading day or before expiry. The period within which a buyer can exercise the option is specified for it

Financial instruments are categorized by sectors of the economy. An economic sector is a part of economic activity which has specific characteristics, economic goals, functions and behavior, which allow separating this sector from other parts of the economy. ENUM_SYMBOL_SECTOR lists the economic sectors which a trading instruments can belong to.

ENUM_SYMBOL_SECTOR

ID	Description
SECTOR_UNDEFINED	Undefined
SECTOR_BASIC_MATERIALS	Basic materials
SECTOR_COMMUNICATION_SERVICES	Communication services
SECTOR_CONSUMER_CYCLICAL	Consumer cyclical
SECTOR_CONSUMER_DEFENSIVE	Consumer defensive
SECTOR_CURRENCY	Currencies
SECTOR_CURRENCY_CRYPTO	Cryptocurrencies
SECTOR_ENERGY	Energy
SECTOR_FINANCIAL	Finance
SECTOR_HEALTHCARE	Healthcare
SECTOR_INDUSTRIALS	Industrials
SECTOR_REAL_ESTATE	Real estate
SECTOR_TECHNOLOGY	Technology
SECTOR_UTILITIES	Utilities

Each financial instrument can be assigned to a specific type of industry or economy branch. An industry is a branch of an economy that produces a closely related set of raw materials, goods, or services. ENUM_SYMBOL_INDUSTRY lists industries which a trading instrument can belong to.

ENUM_SYMBOL_INDUSTRY #

ID	Description
INDUSTRY_UNDEFINED	Undefined
Basic materials
INDUSTRY_AGRICULTURAL_INPUTS	Agricultural inputs
INDUSTRY_ALUMINIUM	Aluminium
INDUSTRY_BUILDING_MATERIALS	Building materials
INDUSTRY_CHEMICALS	Chemicals
INDUSTRY_COKING_COAL	Coking coal
INDUSTRY_COPPER	Copper
INDUSTRY_GOLD	Gold
INDUSTRY_LUMBER_WOOD	Lumber and wood production
INDUSTRY_INDUSTRIAL_METALS	Other industrial metals and mining
INDUSTRY_PRECIOUS_METALS	Other precious metals and mining
INDUSTRY_PAPER	Paper and paper products
INDUSTRY_SILVER	Silver
INDUSTRY_SPECIALTY_CHEMICALS	Specialty chemicals
INDUSTRY_STEEL	Steel
Communication services
INDUSTRY_ADVERTISING	Advertising agencies
INDUSTRY_BROADCASTING	Broadcasting
INDUSTRY_GAMING_MULTIMEDIA	Electronic gaming and multimedia
INDUSTRY_ENTERTAINMENT	Entertainment
INDUSTRY_INTERNET_CONTENT	Internet content and information
INDUSTRY_PUBLISHING	Publishing
INDUSTRY_TELECOM	Telecom services
Consumer cyclical
INDUSTRY_APPAREL_MANUFACTURING	Apparel manufacturing
INDUSTRY_APPAREL_RETAIL	Apparel retail
INDUSTRY_AUTO_MANUFACTURERS	Auto manufacturers
INDUSTRY_AUTO_PARTS	Auto parts
INDUSTRY_AUTO_DEALERSHIP	Auto and truck dealerships
INDUSTRY_DEPARTMENT_STORES	Department stores
INDUSTRY_FOOTWEAR_ACCESSORIES	Footwear and accessories
INDUSTRY_FURNISHINGS	Furnishing, fixtures and appliances
INDUSTRY_GAMBLING	Gambling
INDUSTRY_HOME_IMPROV_RETAIL	Home improvement retail
INDUSTRY_INTERNET_RETAIL	Internet retail
INDUSTRY_LEISURE	Leisure
INDUSTRY_LODGING	Lodging
INDUSTRY_LUXURY_GOODS	Luxury goods
INDUSTRY_PACKAGING_CONTAINERS	Packaging and containers
INDUSTRY_PERSONAL_SERVICES	Personal services
INDUSTRY_RECREATIONAL_VEHICLES	Recreational vehicles
INDUSTRY_RESIDENT_CONSTRUCTION	Residential construction
INDUSTRY_RESORTS_CASINOS	Resorts and casinos
INDUSTRY_RESTAURANTS	Restaurants
INDUSTRY_SPECIALTY_RETAIL	Specialty retail
INDUSTRY_TEXTILE_MANUFACTURING	Textile manufacturing
INDUSTRY_TRAVEL_SERVICES	Travel services
Consumer defensive
INDUSTRY_BEVERAGES_BREWERS	Beverages - Brewers
INDUSTRY_BEVERAGES_NON_ALCO	Beverages - Non-alcoholic
INDUSTRY_BEVERAGES_WINERIES	Beverages - Wineries and distilleries
INDUSTRY_CONFECTIONERS	Confectioners
INDUSTRY_DISCOUNT_STORES	Discount stores
INDUSTRY_EDUCATION_TRAINIG	Education and training services
INDUSTRY_FARM_PRODUCTS	Farm products
INDUSTRY_FOOD_DISTRIBUTION	Food distribution
INDUSTRY_GROCERY_STORES	Grocery stores
INDUSTRY_HOUSEHOLD_PRODUCTS	Household and personal products
INDUSTRY_PACKAGED_FOODS	Packaged foods
INDUSTRY_TOBACCO	Tobacco
Energy
INDUSTRY_OIL_GAS_DRILLING	Oil and gas drilling
INDUSTRY_OIL_GAS_EP	Oil and gas extraction and processing
INDUSTRY_OIL_GAS_EQUIPMENT	Oil and gas equipment and services
INDUSTRY_OIL_GAS_INTEGRATED	Oil and gas integrated
INDUSTRY_OIL_GAS_MIDSTREAM	Oil and gas midstream
INDUSTRY_OIL_GAS_REFINING	Oil and gas refining and marketing
INDUSTRY_THERMAL_COAL	Thermal coal
INDUSTRY_URANIUM	Uranium
Finance
INDUSTRY_EXCHANGE_TRADED_FUND	Exchange traded fund
INDUSTRY_ASSETS_MANAGEMENT	Assets management
INDUSTRY_BANKS_DIVERSIFIED	Banks - Diversified
INDUSTRY_BANKS_REGIONAL	Banks - Regional
INDUSTRY_CAPITAL_MARKETS	Capital markets
INDUSTRY_CLOSE_END_FUND_DEBT	Closed-End fund - Debt
INDUSTRY_CLOSE_END_FUND_EQUITY	Closed-end fund - Equity
INDUSTRY_CLOSE_END_FUND_FOREIGN	Closed-end fund - Foreign
INDUSTRY_CREDIT_SERVICES	Credit services
INDUSTRY_FINANCIAL_CONGLOMERATE	Financial conglomerates
INDUSTRY_FINANCIAL_DATA_EXCHANGE	Financial data and stock exchange
INDUSTRY_INSURANCE_BROKERS	Insurance brokers
INDUSTRY_INSURANCE_DIVERSIFIED	Insurance - Diversified
INDUSTRY_INSURANCE_LIFE	Insurance - Life
INDUSTRY_INSURANCE_PROPERTY	Insurance - Property and casualty
INDUSTRY_INSURANCE_REINSURANCE	Insurance - Reinsurance
INDUSTRY_INSURANCE_SPECIALTY	Insurance - Specialty
INDUSTRY_MORTGAGE_FINANCE	Mortgage finance
INDUSTRY_SHELL_COMPANIES	Shell companies
Healthcare
INDUSTRY_BIOTECHNOLOGY	Biotechnology
INDUSTRY_DIAGNOSTICS_RESEARCH	Diagnostics and research
INDUSTRY_DRUGS_MANUFACTURERS	Drugs manufacturers - general
INDUSTRY_DRUGS_MANUFACTURERS_SPEC	Drugs manufacturers - Specialty and generic
INDUSTRY_HEALTHCARE_PLANS	Healthcare plans
INDUSTRY_HEALTH_INFORMATION	Health information services
INDUSTRY_MEDICAL_FACILITIES	Medical care facilities
INDUSTRY_MEDICAL_DEVICES	Medical devices
INDUSTRY_MEDICAL_DISTRIBUTION	Medical distribution
INDUSTRY_MEDICAL_INSTRUMENTS	Medical instruments and supplies
INDUSTRY_PHARM_RETAILERS	Pharmaceutical retailers
Industrials
INDUSTRY_AEROSPACE_DEFENSE	Aerospace and defense
INDUSTRY_AIRLINES	Airlines
INDUSTRY_AIRPORTS_SERVICES	Airports and air services
INDUSTRY_BUILDING_PRODUCTS	Building products and equipment
INDUSTRY_BUSINESS_EQUIPMENT	Business equipment and supplies
INDUSTRY_CONGLOMERATES	Conglomerates
INDUSTRY_CONSULTING_SERVICES	Consulting services
INDUSTRY_ELECTRICAL_EQUIPMENT	Electrical equipment and parts
INDUSTRY_ENGINEERING_CONSTRUCTION	Engineering and construction
INDUSTRY_FARM_HEAVY_MACHINERY	Farm and heavy construction machinery
INDUSTRY_INDUSTRIAL_DISTRIBUTION	Industrial distribution
INDUSTRY_INFRASTRUCTURE_OPERATIONS	Infrastructure operations
INDUSTRY_FREIGHT_LOGISTICS	Integrated freight and logistics
INDUSTRY_MARINE_SHIPPING	Marine shipping
INDUSTRY_METAL_FABRICATION	Metal fabrication
INDUSTRY_POLLUTION_CONTROL	Pollution and treatment controls
INDUSTRY_RAILROADS	Railroads
INDUSTRY_RENTAL_LEASING	Rental and leasing services
INDUSTRY_SECURITY_PROTECTION	Security and protection services
INDUSTRY_SPEALITY_BUSINESS_SERVICES	Specialty business services
INDUSTRY_SPEALITY_MACHINERY	Specialty industrial machinery
INDUSTRY_STUFFING_EMPLOYMENT	Stuffing and employment services
INDUSTRY_TOOLS_ACCESSORIES	Tools and accessories
INDUSTRY_TRUCKING	Trucking
INDUSTRY_WASTE_MANAGEMENT	Waste management
Real estate
INDUSTRY_REAL_ESTATE_DEVELOPMENT	Real estate - Development
INDUSTRY_REAL_ESTATE_DIVERSIFIED	Real estate - Diversified
INDUSTRY_REAL_ESTATE_SERVICES	Real estate services
INDUSTRY_REIT_DIVERSIFIED	REIT - Diversified
INDUSTRY_REIT_HEALTCARE	REIT - Healthcase facilities
INDUSTRY_REIT_HOTEL_MOTEL	REIT - Hotel and motel
INDUSTRY_REIT_INDUSTRIAL	REIT - Industrial
INDUSTRY_REIT_MORTAGE	REIT - Mortgage
INDUSTRY_REIT_OFFICE	REIT - Office
INDUSTRY_REIT_RESIDENTAL	REIT - Residential
INDUSTRY_REIT_RETAIL	REIT - Retail
INDUSTRY_REIT_SPECIALITY	REIT - Specialty
Technology
INDUSTRY_COMMUNICATION_EQUIPMENT	Communication equipment
INDUSTRY_COMPUTER_HARDWARE	Computer hardware
INDUSTRY_CONSUMER_ELECTRONICS	Consumer electronics
INDUSTRY_ELECTRONIC_COMPONENTS	Electronic components
INDUSTRY_ELECTRONIC_DISTRIBUTION	Electronics and computer distribution
INDUSTRY_IT_SERVICES	Information technology services
INDUSTRY_SCIENTIFIC_INSTRUMENTS	Scientific and technical instruments
INDUSTRY_SEMICONDUCTOR_EQUIPMENT	Semiconductor equipment and materials
INDUSTRY_SEMICONDUCTORS	Semiconductors
INDUSTRY_SOFTWARE_APPLICATION	Software - Application
INDUSTRY_SOFTWARE_INFRASTRUCTURE	Software - Infrastructure
INDUSTRY_SOLAR	Solar
Utilities
INDUSTRY_UTILITIES_DIVERSIFIED	Utilities - Diversified
INDUSTRY_UTILITIES_POWERPRODUCERS	Utilities - Independent power producers
INDUSTRY_UTILITIES_RENEWABLE	Utilities - Renewable
INDUSTRY_UTILITIES_REGULATED_ELECTRIC	Utilities - Regulated electric
INDUSTRY_UTILITIES_REGULATED_GAS	Utilities - Regulated gas
INDUSTRY_UTILITIES_REGULATED_WATER	Utilities - Regulated water
INDUSTRY_UTILITIES_FIRST	Start of the utilities services types enumeration. Corresponds to INDUSTRY_UTILITIES_DIVERSIFIED.
INDUSTRY_UTILITIES_LAST	End of the utilities services types enumeration. Corresponds to INDUSTRY_UTILITIES_REGULATED_WATER.

Running MQL5 Program Properties

Account Properties