This window lets you view and edit the properties of the selected records. You can type Tab to move between to text fields, or Control-Tab to move out of the notes text view. The Info inspector can be opened via Command-I or Command-Option-I.

This shows the file’s name, kind, size, and dates, as well as EagleFiler metadata such as the title, source URL, and from.
If the file didn’t have an embedded title (or you set the title to be blank), EagleFiler will use the filename (without the extension) as the title, and the title will stay in sync with the filename if you rename it.