Could someone define exactly what "Front Image" refers to in Photoshop Path Operations?

Another way of considering front image: if you have more than one image in a Layer, the one that's first in the list is the first image.

You can drag the layers to rearrange the order (except the background Layer which you have to click on the padlock to convert it to a Normal layer before you can move it).

Oh, I just noticed you were asking about Paths so the earlier answers are more appropriate!

Do you mean here?

If so the "Front" shape is the last path drawn (unless reordered in the way shown by c.pfaffenbichler

So if I draw the left path first - then the right - the right oval is the "front" path

The combined fill shape looks like this :

Subtract Front looks like this :

Intersect looks like this :

Exclude overlap looks like this:

Dave

Where exactly is a

"front image"

mentioned?