doc improvement
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@title[#:tag "pipeports"]{Pipes}
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@title[#:tag "pipeports"]{Pipes}
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A Racket @deftech{pipe} is internal to Racket, and not related to
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A Racket @deftech{pipe} is internal to Racket, and not related to
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OS-level pipes (which are @tech{file-stream ports}) for communicating
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OS-level pipes for communicating between different
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between different processes.
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processes.@margin-note*{OS-level pipes may be created by
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@racket[subprocess], opening an existing named file on a Unix
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filesystem, or starting Racket with pipes for its original input,
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output, or error port. Such pipes are @tech{file-stream ports},
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unlike the pipes produced by @racket[make-pipe].}
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@defproc[(make-pipe [limit exact-positive-integer? #f]
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@defproc[(make-pipe [limit exact-positive-integer? #f]
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[input-name any/c 'pipe]
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[input-name any/c 'pipe]
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