If you typed field help text for any field definition, select Show field help texts in the Verify job options dialog to have the text displayed whenever you verify the field. (Show me what it looks like.) Field help text is useful when no information about the field content is available during verification, such as when you use the fast verify mode.
Whether this option is selected or not, you can toggle the help text (if there is any) on and off by using the keyboard shortcut Shift+F12.