What is meant by "Add project to working sets" in eclipse neon?

Question

I was starting with a new project in eclipse Neon version 3. I came across with this option saying "Add project to working sets". What does it mean if i choose it?

Answer 1

Eclipse's Working sets let you group projects:

Working sets group elements for display in views or for operations on a set of elements.

For a new projects to be added to set, you need to add it explicitly

Newly created resources are not automatically included in the active working set.