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  • PPN
    /P-P-N/, /pip'n/ [from `Project-Programmer Number'] n. A user-ID under {{TOPS-10}} and its various mutant progeny at SAIL, BBN, CompuServe, and elsewhere. Old-time hackers... VIEW ENTIRE DEFINITION


  •  View Definition: filter 

    filter


    [orig. {UNIX}, now also in {MS-DOS}] n. A program that processes an input data stream into an output data stream in some well-defined way, and does no I/O to anywhere else except possibly on error conditions; one designed to be used as a stage in a `pipeline' (see plumbing).