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copybook

   Also found in: Dictionary/thesaurus, Idioms, Wikipedia 0.02 sec.
(programming, library)copybook - (Or "copy member", "copy module") A common piece of source code designed to be copied into many source programs, used mainly in IBM DOS mainframe programming.

In mainframe DOS (DOS/VS, DOS/VSE, etc.), the copybook was stored as a "book" in a source library. A library was comprised of "books", prefixed with a letter designating the language, e.g., A.name for Assembler, C.name for Cobol, etc., because DOS didn't support multiple libraries, private libraries, or anything. This term is commonly used by COBOL programmers but is supported by most mainframe languages. The IBM OS series did not use the term "copybook", instead it referred to such files as "libraries" implemented as "partitioned data sets" or PDS.

Copybooks are functionally equivalent to C and C++ include files.


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After some ineffectual remonstrance I kept away from him, staying in a room--evidently a children's schoolroom--containing globes, forms, and copybooks.
The War Of The Worlds by Wells, H.G. View in context
"I keep turning over new leaves, and spoiling them, as I used to spoil my copybooks, and I make so many beginnings there never will be an end," he said dolefully.
Little Women by Alcott, Louisa May View in context
His schoolhouse was a low building of one large room, rudely constructed of logs; the windows partly glazed, and partly patched with leaves of old copybooks.
The Legend Of Sleepy Hollow by Irving, Washington View in context
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