Action, Activity, ActivityParameter, ActivityPartition, ActivityRegion,
Actor, Artifact, Change, Class, Collaboration, Component, Decision, DeploymentSpecification, DiagramFrame, Entity, Event, GUIElement, InteractionFragment, InteractionOccurrence, Interface, InterruptibleActivityRegion, Issue,
Node, Object, Part, Requirement, Screen, Sequence, State, StateNode and UseCase
A number of elements are not visible in the project browser:
Association, Boundary, Constraint, EmbeddedElement4, InteractionState, Note, Synchronization and Text
Creation of the Association is further limited to package level. This is also the case for the following types:
ExceptionHandler, ExpansionRegion, Report, TimeLine and UMLDiagram
Furthermore (and finally) there are two more of the kind but you are only allowed to create them
inside an Activity:
EntryPoint, ExitPoint, Port, ProvidedInterface and RequiredInterface
(copy/paste from my Scripting book; got that from various sources somewhere in the help)
q.