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alphanumeric arithmetic binary Boolean Algebra bytes chapter characters Cobol language Cobol program collating sequence conditional statement contain control footing Data Division data name debugging decimal places decimal point declarative defined delimiter detail line digits discussed DISPLAY DISPLAY DISPLAY EBCDIC elementary items encoding END clause entry ERROR executed EXHIBIT NAMED F9 I F9 figurative constants floating point flow of control group item illustrates Input Procedure Job Control Language KEY clause language manual level numbers Linkage literals logical memory Merge module multiple non-numeric numeric data item occurrence numbers OCCURS clause operands operations option organization Output Procedure perform range picture printed Procedure Division procedure names PROGRAM-ID receiving field record description reference referenced RELATIVE KEY relative record result Return statement SECTION segments sending field sequential Sequential Access Sort statement sort-file specified string structure Structured Programming subprogram subroutine SUBTRACT truncation VSAM word WRITE written XX-TEXT zero