The VCS Integration feature works with IS elements up to and including the package level. When you apply a VCS Integration command to a container element (a folder or package), the command is applied to all of the folders and elements in the container that are subject to VCS management. You can use this feature to check out or check in elements, or get the latest version or an earlier version of all the elements in an entire package or folder

For example, if you apply the Check In command to a folder, all supported elements contained in the hierarchy of that folder are checked in to the VCS. For specific information about files that are not supported by the VCS Integration feature, see Understanding Package, Element, and File Behavior.