How does the Crop option work in Pathfinder?

Question

Adobe Illustrator

What she does? How to use it predictably?
What is its advantage over other modes?

Answer 1

(the picture is 7 years old, but the essence is the same)
design.tutsplus.com/tutorials/a-comprehensive-guid...
Everyone decides for himself what its advantage is. I don’t use it at work and feel great, so for me the advantage is zero. But to solve some problems, it may be indispensable.