Getting the latest version of the project from the repository

When you do this, you are updating your working copy of the project with the latest team project. This is typically used when other authors have made changes and you need to update your working copy.

Uploading your changes to the repository

When you do this, you are updating the team project with changes you have made in your working copy of the project. This is typically used when you need to make your changes available to other authors.