Undefined type of RelationType creates a hole that can contain any XML

[mwindhouwer]

RelationType? in the CMD header is defined as follows:

<xs:element maxOccurs="1" minOccurs="1" name="RelationType"/>

As there is no explicit type some XSD rules kick in:

"An <element> with no referenced or included type definition will correspond to an element declaration which has the same type definition as the head of its substitution group if it identifies one, otherwise the ·ur-type definition·."

In this case the ur-type definition is taken, which basically allows any content, so unintentionally

<RelationType?>

<hello>world</hello>

</RelationType?>

becomes possible, while only a string value was intended.

[Twan Goosen]

Fixed, see ​cmd-envelop.xsd