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Parameter Definitions

A parameter definition defines a constant value available to all objects of a given class. When you create a class definition (or at any point before compilation), you can set the values for its class parameters. By default, the value of each parameter is the null string, but you can specify a non-null value as part of the parameter definition. At compile-time, the value of the parameter is established for all instances of a class. With rare exceptions, this value cannot be altered at runtime.

See Parameter Syntax and Keywords in this reference.

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