title: Is it possible to have a 'permanent' placeholder?
body: <p>I am working on a system which includes some textboxes which measure things like temperature, heart rates beats per minute etc. Right now I just use a textbox and add the unit after the textbox on the same line.</p>
  
  <p>My issue is space is rather limited so I would like to include the unit info within the textbox if possible, say right-aligned. I know about the HTML5 placeholder attribute but this is only meant to be applicable to empty fields and disappears once data is entered. What I would like is for that unit info to always be visible.</p>
  
  <p>Does something like a permanent version of placeholder exist? Or is there a way such a feature could be implemented? I've searched for this issue and have found <a href="https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills" rel="noreferrer">this link</a> which almost solves the issue but all these placeholders disappear when text is entered - I want the equivalent of a placeholder but have it always be visible while not showing up in the POST data when it is submitted.</p>