SPTP — <>, <>

<<CRasync>>, <<CRsync>>: In my understanding, UML already includes means to represent sync
and async invocations (through the arrow shape - e.g. in RTS one can
edit the 'Timing' folder in the methods properties). Therefore, I would
consider these stereotypes as alternative to the already existing UML
notation. Nevertheless, such stereotypes are associated with the UML
notion of action (e.g. OSD::Step), what forbids combining them directly
with the methods invocations (or operations). To be more exact, I
suggest allowing these stereotypes to be associated also with operations
(see attached item 2 in (Leandro Diagrams.doc)

see below