Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

NULL

NULL returns the null pointer value. The null pointer value does not identify any generation of a variable. The null pointer value can be assigned to and compared with handles. The null pointer value can be converted to OFFSET by assignment of the built-in function value to an offset variable.

Read syntax diagramSkip visual syntax diagram>>-NULL--+----+------------------------------------------------><
         '-()-'
 

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