UML14 — Invalid XMI.link.atts in UML 1.4 DTD

The DTD for UML 1.4 (ad/01-02-16)(which claims to be XMI 1.1) has a
XMI.link.att declaration as follows:

<!-- _______________________________________________________________ -->
<!-- -->
<!-- XMI.link.att defines the attributes that each XML element that -->
<!-- corresponds to a metamodel class must have to enable it to -->
<!-- function as a simple XLink as well as refer to model -->
<!-- constructs within the same XMI file. -->
<!-- _______________________________________________________________ -->

<!ENTITY % XMI.link.att
'href CDATA #IMPLIED xmi.idref IDREF #IMPLIED xml:link
CDATA #IMPLIED xlink:inline (true|false) #IMPLIED
xlink:actuate (show|user) #IMPLIED xlink:content-role
CDATA #IMPLIED xlink:title CDATA #IMPLIED xlink:show
(embed|replace|new) #IMPLIED xlink:behavior CDATA
#IMPLIED'>

The XMI 1.1 (and XMI 1.2) standard specifies only href and xmi.idref out of
these (p4-81 of formal/00-11-02).

The others seem to be copied from the "UML 1.1" DTD in the XMI 1.1 appendix
(this appendix was removed at XMI 1.2 since it was wrong and misleading).

Many of the above link attributes seem actually to be invalid:

• xml:link is invalid since this is not part of the xml namespace
• xlink:inline, xlink:behavior and xlink:content-role are not part of xlink
  namespace
• xlink:actuate has invalid values - the standard values are
  (onLoad|onRequest|other|none)
• xlink:show is missing values - the full set is
  (new|replace|embed|other|none) [I guess it is not so much of a problem to
  exclude certain values]

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