See what fields are used in a form

Similar to the Used By tab, I propose adding another tab for Forms that list all the fields that are currently being used in a specific form. 

It's very frustrating to have to open a form in order to see what fields are included, which then creates a draft of both the form and the landing page. Looking at the preview isn't helpful because we use hidden fields and change the labels on many of the fields.  This extra tab would save time and be a better user experience.