Library items are VM templates, vApp templates, or other VMware objects that can be contained in a content library.
VMs and vApps have several files, such as log files, disk files, memory files, and snapshot files that are part of a single library item. You can create library items in a specific local library or remove items from a local library. You can also upload files to an item in a local library so that the libraries subscribed to it can download the files to their NFS or SMB server, or datastore.
For information about the tasks that you can perform by using the content library service, see Working with Content Libraries.