title: Creating a New Environment with Multiple Sub-environments in Latex
body: <p>I'd like to create a newenvironment that could contain two lists, each with an arbitrary number of items.</p>
  
  <pre><code>Some fixed text
  \begin{itemize}
  \item item 1
  \item item 2
  \item item 3
  \item item 4
  % Maybe more items
  \end{itemize}
  Some more fixed text
  \begin{itemize}
  \item item 5
  \item item 6
  % Could have more items here
  \end{itemize}
  Some text at the end
  </code></pre>
  
  <p>I am creating a presentation using Beamer, and I have a recurring slide structure on several slides (but not all).  One that has two lists, and an image on the right.  I would like to separate the content (the items and picture path) from the display.  Let's say I wanted to have the picture on the right instead of left.  I would like to be able to change the environment definition, and apply changes to all relevant slides.</p>
  
  <p>Thank you</p>