How to open more than one working version of a project

If you have more than one working versions of a project, you can open them all in Eclipse. The name of the project is constructed using the convention Project Name_Project Version.

For example, if you have the working versions Px-1, Px-2, and Px-3 of a project Px and you open them in the order Px-1, Px-2, Px-3, the projects created in Eclipse will be Px, Px_2, and Px_3.