COBOL

The COBOL programming language is available.

This article is a stub. You can improve NDWiki by expanding it.

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.

NORD-10 COBOL features

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.

Sources

Norsk Data Document ND–60.144 ND COBOL REFERENCE MANUAL