UML14 — Need well defined way to extend OCL

Summary: Because no predefined set of operations will cover all cases needed in
practical situations it s important that there is a well-defined way
to extend OCL.

It is possible to define all predefined OCL types within one predefined UML
package
end define package extension mechanisms to add extensions to OCL.
The current OCL specification doesn"t disallow that, but it should
be explained explicitly how this can be done.

Fixed in UML 1.3.