6. The method of claim 3 , further including accessing a definition of a call activity to enable calling the subprocess from the parent process, wherein a reference to the call activity includes the one or more arguments set with the one or more variables.
6. The method of claim 3 , further including accessing a definition of a call activity to enable calling the subprocess from the parent process, wherein a reference to the call activity includes the one or more arguments set with the one or more variables. 14. The method of claim 6 , further including employing the code fragment representing the process logic and included in the subprocess definition to perform an operation on the one or more variables or on copies of the one or more variables, via the one or more parameters, when the one or more variables are passed by reference or by value, respectively, to the subprocess from the parent process.