what does the arrow mean that is next to the gas pump symbol in my car?

Why Is There An Arrow Next To The Gas Pump Symbol?
I never knew, and I actually can't believe I never even questioned why it was there.  My last two or three cars have had an arrow next to the gas pump symbol on the instrument panel.
As I finally went to the owner's manual to find out how to reset my clock after the time change, I came…