ESSBASE @FIX statement

Question

I am trying to learn essbase scripting on my own and came across the following parts in a big script.

    fix ("Stock Alloc %");
        @idescendants("Company A");
    endfix;

I think this part is doing nothing because

fix ("Stock Alloc %") is just selecting "Stock Alloc %" member and @idescendants("Company A"); is just listing out all the descendants of "Company A" including itself.

So nothing really is happening. Am I correct ?

I understand this is a very trivial question but I do not have anyone to ask/clarify.

It would be very kind of someone to comment. Thanks in advance.