1963 shift indicator

[sunapeemark]

there are three choices for the shift indicator on my 63. The one on tho far rt is a black dot. The middle one is a blue dot. The far left one is also a black dot. Which is the proper one for every day driving and what are the others for?

 

[MoCity]

Not sure about black or blue dots, the factory has white dots and a green dot (which is the “normal” drive position.) I attached a copy of the owners manual page explaining the other drive selections.