double AccountFreeMarginCheck	(	string	symbol,
		int	cmd,
		double	volume
	)

Returns free margin that remains after the specified order has been opened at the current price on the current account

Parameters

symbol	Symbol for trading operation
cmd	Operation type. It can be either OP_BUY or OP_SELL
volume	Number of lots

Returns

Free margin that remains after the specified order has been opened at the current price on the current account. If the free margin is insufficient, an error 134 (ERR_NOT_ENOUGH_MONEY) will be generated