Used to state that the required element <tbx:term> has been left empty deliberately and is therefore not an error.
OPTIONAL on element: <tbx:term>
|yes||The element <tbx:term> has no content, it has been left empty deliberately|
|no||The element <tbx:term> has content as usual. This value need never be used, the content of <tbx:term> is sufficient.|
|Restriction||This attribute is an optional attribute; there is no default.|