Prefix for existing or viewing

I believe the answer is:

pre

(Other definitions for pre that I've seen before include "Before, prior to" , "Prefix meaning before" , "Before or ahead of" , "Before starting" , "Combining form meaning before" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.