<fLib xmlns="http://www.tei-c.org/ns/1.0">
  
<f name="xxx">A feature may have untyped content</f>
<f name="yyy"><string>or typed</string></f>
<f name="notgood"><string>multiple types</string>
<symbol value="doubleplusungood"/>
</f>
<f name="alsonotgood">mixed content
<symbol value="doubleplusungood"/>
</f>
</fLib>
