Unclear "Score Window" "BDA show/hide"

I just list key commands in Excel and find for the Huey and the SA342 following key command:

Score Window \

Category General.

It actually conflicts with the open communications menu command.

And in the DCS commands listing it is also double:

"Score window" and "BDA show/hide".

Does anyone know, what is behind these commands?

I'm not sure about the Score Window for Huey, but normally it should show the Score Window (the one shown after the mission as well) - for whatever reason I've got this under Su-25T plane I'm just flying, instead of the UI Layer where I'd expect it.

BDA show/hide is "battle damage assessment" - those are the messages shown on the right side when you damage something. It probably has to be enabled in the Options as well (available only in main menu options, not inside the mission).