Request for Clarification: Partial Fill

Dear all,

I would like to exactly understand the behavior of partial filling for both methods ExecuteMartketRangeOrderAsync() and PlaceLimitOrderAsync():

1. What happens to remaining (unfilled) volume if my order is partially filled? Will it remain in the order book and can be filled at a later stage? Or will it be canceled?
2. Will the callback methods be called upon every partial fill? Or only the first one?

For more context: I am asking question 1 with the underlying thought of whether I have to manually take care of the rest of my volume or cTrader will handle it for me and split my order into various smaller positions. Question 2 refers to whether I can take care of all positions created with the above methods through the callback methods or better through subscription to the Positions.Opened event.

Thanks in advance for the clarification,

h.