title: Firefox local filesystem links in quantum
body: <p>We are wanting to move our intranet users from IE to Firefox but we have some places where we want to be able to open local (or network) files or directories.
  I have found quite a few references in Stack Overflow and otherwise but most of them are quite old and none of the old techniques seem to work with the current version of Firefox Quantum (v68 at the time of writing).</p>
  
  <p>The Local Filesystem Links extension seems to work well but I would rather not rely on an extension, particularly one that also requires installation of an addon module, if possible.</p>
  
  <p>Can anybody tell me how to access the local filesystem from a webpage in Firefox by just changing settings in about: config?  Or is this just not possible anymore?</p>
  
  <p>I am hoping to get something like <code>&lt;a href="file://///networkdrive/directory"&gt;</code> working if possible</p>