VBA Project

By default every project is initially named VBAProject, therefore the list may contain several identically named items.
To distinguish a project change its name in the Properties window of the original project using the VB Editor.

This is a list of all the references (libraries) that are being used in this project
You can determine their name, file name and description.
If you add any additional references are these stored in a specific place in the Registry.

Checking External References

The VBIDE References collection provides a method of checking that all the application's references are installed.

Between Projects

For code in one project to call code in another project the calling project must have a reference to the calling project.