History, what is it good for?

[Ruatha]

I tried running a few single player turns both sequential and simultaneous, to see how the hiostory is made. But I can't see how to make it.
If I could se how it's made perhaps I could make my own history files to keep track of events in the PBW games. If it's just text files it shouldn't be to hard.
But how to get a history ? What to do? I mean in the game, is there some setting, must it be multi player?
I'm confused (More so than usual)