Rearview mirror dimming button

[deathsled]

This question has less to do with old school mirrors than modern mirrors though my first encounter with using a rearview mirror was in my 69 Mustang coupe. 
For the night time dimming button do you push forward or pull toward you? Mine is kept in a state of pulled toward me during daytime and I push forward to dim night lights. Since I had my first car I have been ritualistic about that but later realized it worked both ways. In my Towncar it's automatic so that doesn't count.
Just curious.

In retrospect it's rather a trivial and ridiculous question. But I'm still curious.