<?xml version="1.0" encoding="UTF-8"?>
<error-list domain="mdn">
  <error type="question" id="notify-sender">
    <primary>Sender wants to be notified when you have read this message.</primary>
  </error>
  <error type="info" id="sender-notified">
    <primary>Sender has been notified that you have read this message.</primary>
  </error>
</error-list>