Couldn't find the answer to this on their FAQ in full...

But what exactly do the location country and city fields do regarding search?

There doesn't seem to be any search filter option for either customer end for example.

A quick example, if ive got a generic shot of a cave (or anything) would adding the location country mean it ONLY turns up in searches or filters involving that country and if so, would labeling as "not relevant" be more useful?
The flip side is otherwise does the opposite happen, its prioritised searching for that country but not de-ranked if they dont?

I don't know how the search engine algorithm at P5 works, but why not include the exact location?
It's more or less the only way to get generic shots of landscapes, nature or related topics sold.

For the reason above, i dont know how it affects searches.

If for example ive got a feature thats common in several places, what i dont want to happen is it ONLY shows in searches for the specific place its tagged as from.
I dont know how the algorithm works hence asking.