Stupidest question ever!

Bought some hinges (Stanley, 5 knuckle variety) and I noticed that one side
of the hinge (the 3 knuckle side with the company name stamped on it) has a
slight bend to it at the knuckle and the other side is flat. Which side
goes on the door and which side goes on the jamb?

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Edee Em
I know the truth is out there, but I like to stay in....