MT4 Function Details

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Questions about the Bars function (or variable):

What are the maximum and minimum values of Bars?

It counts up each time a new bar appears on a chart, but how high does it count? What happens when it reaches the maximum - does the value of Bars remain at the maximum value until the program is shut down? At what point does Bars reset to its minumum value - when it reaches the max, or in some other way?

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OrderSend()

When you place a pending order with OrderSend(), the function returns the ticket number of the pending order.

Question: When the pending order gets filled, does the filled order have a new ticket number?

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OrderSend()

When you want to place an order without any slippage limitations (or bounds), how do you specify that in the OrderSend function?

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OrderSend() Arrow

Is there anyway to change the default arrow drawn on the chart when the OrderSend() function places an order? For example I would rather see an up/down triangle than the up-right/down-right arrows it draws by default.