The Program-ID paragraph gives the name by which a program is identified and assigns selected program attributes to that program.
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The Program-ID paragraph specifies the name by which a program prototype is identified.
The Program-ID paragraph specifies the name by which a call prototype is identified.
General Formats for Format 1
General Formats for Format 2
General Formats for Format 3
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General Formats for Format 4
Directives
- In addition to Compiler directives which provide flagging and modify the reserved word list, the following directives may impact either the syntax or the semantics described in this section.
- CASE - determines whether upper-case and lower-case letters are considered equivalent.
- DEFAULT-BYTE - sets the value for data items defined in Working-Storage Section without a VALUE clause.
- MAPNAME - impacts the handling of non-alphabetic characters in the program-name.
- PROGID-COMMENT - causes Format 1 to be assumed rather than Format 2.
Syntax Rules for Formats1 and 2
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The first 8 characters of program-name-1 of a program that is not contained in another program should be unique in the system. The first character must be alphabetic; otherwise it is converted as follows:
- 1 through 9 are changed to A through I respectively.
- Anything else is changed to J.
If a hyphen is used in characters 2 through 8 of program-name-1 in a program that is not contained in another program, it is changed to zero (0).
The MAPNAME Compiler directive controls this behavior.
For programs that are contained in another program, program-name-1 can be any valid user-defined COBOL word, up to 30 characters long. The first eight characters need not be unique, and they will not be converted as described above. Lower-case letters are valid, but such program-names will be handled in a case-insensitive manner.
A program contained within another program must not be assigned the same name as that of any other program contained within the compilation unit that contains this program.
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Syntax Rules for Format 4
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Program-prototype-name-1 identifies the program prototoype. However, literal-1, if specified, is the name of the program prototype that is externalized to the operating environment.
General Rules for Formats 1 and 2
- Program-name-1 names the program declared by this program definition and is associated with the object code file pertaining to this program. Literal-1, if specified, is the name of the program that is externalized to the operating environment.
General Rules for Format 3
Program-name-1 names the call prototype that will be used during syntax checking to determine the validity and nature of CALL literal statements.