Which class contains human player actions? UnitCommandType Class of Order Class?

[Yaser Norouzzadeh]

Hi guys,

I'm analyzing replays for research purpose only. I'm beginner in BWAPI.

In the dataset that I use, there are two variables that looks related to the player actions:
UnitCommandType and Order. When UnitCommandType  is Null, Order has a valid value and vise versa.

I wondering which of them shows the player actions? and what is the different between them. For instance, UnitCommandType could equal to 'attack', and Order could equal to 'attack'  to.

Thanks