title: Adding a back button or link to an image file page
body: <p>I've been asked to add a back button (or link) to pages on a site that's used to sell photos.
  Once the user has selected a picture, they can click on the picture to see a full resolution version in the browser (the jpg file).
  These images are big (3000px wide) but need to be viewable full res by prospective purchasers.
  This is a Wordpress site using Woocommerce, although it's not, per se, a Wordpress issue.
  I've explored various options and although most lightboxes provide a close or back button, these are for images opened in the lightbox and are not full resolution.
  Personally, I think this facility is unnecessary, but, the fact that the client wants it would seem to indicate that other users would find it useful.
  Here's an example product page:
  <a href="https://www.guygriffithscollection.com/product/68-783-s-moss-jaguar-silverstone-09-05-1953-jpg/" rel="nofollow noreferrer">https://www.guygriffithscollection.com/product/68-783-s-moss-jaguar-silverstone-09-05-1953-jpg/</a>
  The site has a simple password entry at the moment: gcdev</p>