This is getting halfway interesting...
It's all about jargon, really.
Pilots have their own,
Engineers have their own.
ATC controllers have therir own.
The military have their own.
Today's PPRuNE is about communication among the entire aviation community.
So keeping the jargon down becomes a simple matter of courtesy.
And, merlinxx.....
I suspect your user name refers to the Merlin XX ?
Now how many people would recognise that reference?
Same difference.
Oh, and while I'm at it... I'm still looking for a copy of the CMM of the Concorde AICU.
You don't know what that is? Maybe you shouldn't be here on this forum either.