UPDM — MaterielBehavior

this association links Material to UML behavioural elements. It seems
to allow Materiel to be linked to either operational behaviour elements or system behaviour
elements, which does not make sense. Without a clear definition for Materiel, it is not clear
whether the system behaviour or operational behaviour is correct. It is usual in DoDAF that
an operational node conducts operational activities, and a system conducts system
functions. Quite what UPDM’s Materiel is or does is something of a mystery.