meaning of paper feed control character

1. Paper Feed Control Character PFCC An obscure mechanism used in Fortran run-time systems whereby the first character of a line of output to a line-printer caused various actions after the line was printed: spacereturn newline 0return newline return newline 1form-feed +return papermail snail mail paper-net snail mail paper tape history> Punched paper tape. An early input/output and storage medium borrowed from telegraph and teletype systems. Data entered at the keyboard of the teletype could be directed to a perforator or punch which punched a pattern of holes across the width of a paper tape to represent the characters typed. The paper tape could be read by a tape reader feeding the computer. Computer output could be similarly punched onto tape and printed off-line. As well as storage of the program and data, use of paper tape enabled batch processing. The first units had five data hole positions plus a sprocket hole for the driving wheel across the width of the tape. These used commercial telegraph code ITA2 also known as Murray, Baudot code, or proprietary codes such as Elliott which were more programmer-friendly. Later systems had eight data holes and used ASCII coding.

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