<para>With each snapshot a description and some userdata can be associated. The
description is a string. The userdata is a list of key-value pairs where the
keys and values are strings.</para>
- <para>Do not use non-ASCII characters for the snapshot description, unless you
- always use the UTF-8 character encoding.</para>
+ <para>Do not use non-ASCII characters for the snapshot description, userdata or
+ any other strings, unless you always use the UTF-8 character encoding.</para>
</refsect2>
<refsect2 id='automatic_snapshot_creation'>