Specifies that words reserved in IBM COBOL V1.00 are to be regarded as reserved words, and changes the behavior of certain features to be compatible with that COBOL system.
>>-.---.-.----.--PC1----------------------->< +-/-+ +-NO-+
None
| Default: | NOPC1 (DIALECT DIALECT |
| Phase: | Syntax check |
| $SET: | Initial |
PC1 sets DEFAULTBYTE"0" and ACCEPTREFRESH immediately.
This directive is synonymous with the IBM-MS and MS"1" directives.