Validator reports on static links that no longer function by checking the target of both Notes document links and standard URL links.
Validator reports on fields that no longer exist on the form/subform design, but still exist on documents.
Validator also checks keyword fields to ensure that values stored in the document still agree with values in the field design.
Validator will also check field validation, translation and default value formulae to ensure they are valid for the current data in the relevant field.
Any Computed for Display fields also get check for stored values in the data.
Lastly, Validator reports on orphaned documents.