COBOL/400 Language Help
You can interpret operands before the WHEN phrase in one of two ways,
depending on how you specify them:
- Individually, they are called selection subjects.
- Collectively they are called a set of selection
subjects.
You can interpret operands in the WHEN phrase in one of two ways, depending
on how you specify them:
- Individually, they are called selection objects.
- Collectively they are called a set of selection objects.
Each selection object within a set of selection objects must correspond to
the selection subject having the same ordinal position within the set of
selection subjects, according to the following rules:
- Identifiers, literals, or arithmetic expressions appearing within a
selection object must be valid operands for comparison to the corresponding
operand in the set of selection subjects.
- Where identifiers are permitted, they can reference items whose usage is
implicitly or explicitly defined as POINTER.
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