The Manager application provides the well versed user the ability to inspect and investigate the Items for completeness / omissions and consistency.

Investigate by Identifiers (labels)

This view can be used to inspect to shat extent Items have been allocated to files. As you can see in the screenshot below, several Items are not associated with any file (so is there no code implementing them? are there no tests?).

Investigate via the document view

Use this view to investigate the occurrence of Items in particular documents.