title: Inverted exclamation and question mark in ISO-8859
body: <p>I need to replace inverted exclamation and inverted question marks in subtitle files so they display correctly on my TV. The files work correctly in ISO-8859, but I can't remove the marks.</p>
  
  <p>The first solution was to use the command '<code>sed</code>':</p>
  
  <pre><code>sed s/\¿|¡//g "$FILE"
  </code></pre>
  
  <p>This works for files in UTF-8, but what would be the right solution for files in ISO-8859?</p>
  
  <p><code>sed 's/\xBF//g'</code>, for example, doesn't work.</p>