UML14 — Operation without - UML2 Superstructure

Page 55 of the current superstructure document lists the operation's
syntax as "visbility name (parameter-list) : property-string" and
states
that "property-string optionally shows other properties of the
operation
enclosed in braces".

I wondering where the good old return type or the property enclosed in
curly brackets might have gone.

If the "property-string" mentioned in the operation's syntax quoted
above is the return type the possibility to add operation wide
properties (like "query") is gone.

If the "property-string" is the way to add properties it should be
enclosed in curly brackets and the separation by the colon from the
parameter list containing also the return type could be misleading.
Hence the colon should be dropped or exchanged by another symbol.

Or am I just misreading the spec?

see above