MOF14 — Navigability of assoc. ends in MOF model

When I was looking at the current MOF 1.4 spec I could not find a place
where is specified, which assoc. ends are navigable and which are not.
There is an inconsistency between the UML picture of MOF metamodel and XMI
(and IDL). Where the picture indicates that some ends (like
RefersTo.referent) are not navigable, XMI says that they are navigable and
also IDL contains getter method for these ends. So I guess the picture is
wrong. This should be fixed, because it is in fact the only place where the
users of the spec can see the navigability without looking at the
hard-to-read XML file or generated IDL. It would be also helpful to add this
also to the description of particular associations in section 3.5.