title: Relative section specification
body: <p>Is it possible to specify the \section \subsection \subsubsection etc. level relative to the previous level?  What I'm thinking of is something like  </p>
  
  <pre><code>\thissection The top level  
     \pushsection  
     \thissection The next level down  
     \thissection One more  
        \pushsection   
        \thissection Deeper  
     \popsection  
     \thissection At the same level and follows "one more"  
  </code></pre>
  
  <p>etc.  The idea is that I'm writing a document from the inside
  out, i.e., starting at a deeper levels, and I don't know how many layers will be on top of it.  This will avoid the need to do a massive re-leveling by renaming \subsection to \subsubsection etc.</p>
  
  <p>BTW, a Google search for latex and "relative section" results in hits that almost exclusively involve misuse of the word "relative"; the authors meant to say "relevant section".</p>
  
  <p>Thank you for any ideas.</p>
  
  <p>Liam</p>