title: Why do tabs line up differently in different text editors?
body: <p>I keep running across a problem where source code that uses tabs to line up key/value assignments is displayed differently in different editors.</p>
  
  <p>For instance, a file on Github in both the <a href="https://github.com/iandunn/WordPress-Plugin-Skeleton/blob/master/classes/wpps-cpt-example.php" rel="nofollow">highlighted</a> and <a href="https://raw.github.com/iandunn/WordPress-Plugin-Skeleton/master/classes/wpps-cpt-example.php" rel="nofollow">raw</a> versions shows the <code>$labels</code> array at line <code>55</code> with mis-aligned spacing. It also looks that way in Notepad.</p>
  
  <p>But, that same file, copied into Aptana or Notepad++ will display the values lined up perfectly. </p>
  
  <p>Why does that happen, and is it possible to create the file in such a way that it will be displayed correctly across all editors?</p>