Firstly thank you all for the responses.
skwinty,
I just have a few concerns though.
I did not understand that the TO/FROM was a set thing, and the aircraft heading doesn't matter.
I get it now. It is always set the way it's shown on the diagram in the link?
But I don't get how that's relevant to us while flying.
Why do we care where the flag is TO or FROM.
I just am confused.