On Wednesday, September 25, 2019, 07:05:47 PM PDT, Clark Morris wrote: >> Copy books cam in with Jovial, well before 1970. >> Assemblers had COPY instructions in the 1960s. >> PL/I had the %INCLUDE statement in the 1960s. By 1970 it was old hat. > COBOL D on DOS/360 had copybooks in 1966 or earlier.
Sorry for the confusion. I was referring to the current internet definition of "macro" which Seymore said existed since 1950. C macro's (1970) are similar functionality to copy books. Was the definition of "macro" always the same as "copy"? Jon. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
