Statements may have a label-prefix introducing an entry name ( ENTRY and PROCEDURE statements ) or label name, and a condition prefix enabling or disabling a computational condition e . g . ( NOSIZE ) ).
2.
Computational exception handling is enabled and disabled by condition prefixes on statements, blocks ( including ON-units ) and procedures . e . g . ( SIZE, NOSUBSCRIPTRANGE ) : A ( I ) = B ( I ) * C;.
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