I do not get this:
 If a position is the result of many orders taking places, each with a specific SL and TP, then what determines the POSITION_SL?
 when we say Order, do we mean pending orders? In other words, are order properties still meaningful or accessible after inking their deals?
 Is there any way to get the timeframe that was used to open orders and positions? ( I can think only about using the ORDER_COMMENT, and POSITION_COMMENT)