Generic code with no flags.

.. code-block:: generic
   :color:

   `include "funnyfile"
   /* This is a multi-line
      c-comment
    */
   # Single-line perl comment
   addbit	g1__0.comp ("a string");
   addbit  g1__1.comp (`abC_123);
   $message('String');
   while ($a == 1 or $b == 2) {
     message('String') < `ls -l`;
   }