SERVD — Notation for String (collection) should be explained

8.5.2.1 Method LocateSearchEndpointsForCoverageArea. Return value specified as "String (collection)", It should be explained that this is a convention to show a Return Result which is an array.
8.5.2.2 Method GetReferenceListDetails. The signature has a return value of ReferenceListDetail (collection). Is this supposed to be multi-valued (i.e, array). This notation should be explained somewhere. It shows with a [] in the UML diagram in section 8.5.1

The convention used to explain this was included and diagrams updated to be more clear with respect to cardinality and associations.