<element name="card" xmlns="http://relaxng.org/ns/structure/1.0"> | |
<attribute name="name"/> | |
<attribute name="email"/> | |
<attribute name="preferredFormat"> | |
<choice> | |
<value type="string">html</value> | |
<value type="string">text</value> | |
</choice> | |
</attribute> | |
</element> |