This illustration shows the Edit Readme dialog overlaying the Registry page, with the Preview tab displayed and showing: 
* the text: 'Hello World example, by Karthequian' followed by link text 'Pulled from Dockerhub'
* a screenshot of the Hello world application running, which includes part of a browser window displaying: 
  + at the top, the text 'Hello. Is it me you're looking for?'
  + at the bottom, the text '2016 Karthik Gaekwad, Visits: 1', followed by a timestamp (with a red box drawn around the '1')
* the Cancel button, and the Save button (selected by default)