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Support for application symbols in the customization dialog |
SA z/OS 3.2 introduced nested class support. With nested class support it is possible to link one class to another class, thus enabling the specification of a class hierarchy. The classes can carry data on various levels which allows an application to inherit data from a class chain.
The value of nested classes is significantly improved by introducing application symbols. Application symbols are similar to the &AOCCLONEx variables but their scope is the resource (that is, application) that they are defined for whereas AOCCLONEn variables apply to all the resources that are defined for a system.
Along with the existing runtime variables, &SUBSPARM, &SUBSSCHED and others that are mainly used in command definitions, SA z/OS introduces application symbols that are named &SUBSSYMBOLn, where n runs from 1 through 9. You can use the application symbol variables in the class definitions, while the corresponding value is defined at the instance level. This allows you to have generic class definitions while variable resolution is done at the application instance.
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