COBOL
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The COBOL programming language is available.
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NORD-10 COBOL is based upon American National Standard X3.23-1974. Elements of the COBOL language are allocated to twelve different functional levels.
Each module of the COBOL standard has two non-null "levels" -- level 1 represents a subset of the full set of capabilities and features contained in level 2.
In order for a given system to be called COBOL, it must provide at least level 1 of the Nucleus, Table Handling and Sequential I/O modules.[1]
NORD-10 COBOL features[1]
| Module | Features available in NORD-10 COBOL |
|---|---|
| Nucleus | All of level 1, plus these features of level 2: Levels 77, 01-49, 66, 88. Value series or range, level 88 conditions. |
| Sequential I/O | All of level 1 plus these features of level 2: RESERVE clause. Multiple operands in OPEN & CLOSE, with individual options per file. Variable used to specify print file ADVANCING LINES. |
| Relative I/O | All of level 1 plus: RESERVE clause. DYNAMIC access mode (with READ next). START (with key relations EQUAL, GREATER, or NOT LESS). |
| Indexed I/O | 1 key only. All of level 1 plus: RESERVE clause. DYNAMIC access mode (with READ next). START (with key relations EQUAL, GREATER, or NOT LESS). |
| Library | Level 1 |
| Inter-Program Communication | Level 1 |
| Table Handling | All of level 2, except "DEPENDING ON" form of OCCURS clause |
| Debugging | Conditional compilation: lines with "D in column 7" are bypassed unless WITH DEBUGGING MODE. READY TRACE, RESET TRACE, EXHIBIT. |
| Sort | level 2; up to 5 sort-file keys. |
Product number
Sources
Norsk Data Document ND–60.144 ND COBOL REFERENCE MANUAL
- ↑ 1.0 1.1 Norsk Data Document ND–60.089.03 May 1979 NORD-10 COBOL REFERENCE MANUAL , Introduction