<?xml version="1.0" encoding="UTF-8"?>
<doc att="top" cat="top">
  <?a-pi some data?>
  <!-- This is the 1st comment -->
  <begin bat="fob">text-in-begin1
    <inner blat="blob">inner-text<!-- This is the 2nd comment --></inner>
    text-in-begin2
  </begin>
  text-in-doc
</doc>