<!--
...
-->
<type name="cm:content">
  <title>Content</title>
  <parent>cm:cmobject</parent>
  <archive>true</archive>
  <properties>
      <property name="cm:content">
        <type>d:content</type>
        <mandatory>false</mandatory>
        <index enabled="true">
          <atomic>true</atomic>
          <stored>true</stored>
          <!-- Here it is -->
          <compressed>true</compressed>