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Annotation of 43BSD/contrib/icon/book/f/abcd.icn, revision 1.1

1.1     ! root        1: procedure main()
        !             2:    while writes(line := read()) do
        !             3:       if line ? (ABCD("","","","") & pos(0))
        !             4:       then write(" accepted")
        !             5:       else write(" rejected")
        !             6: end
        !             7: 
        !             8: procedure ABCD(A,B,C,D)
        !             9:    suspend (=A || =B || =C || =D) |
        !            10:       (="a" || ABCD(A,"b" || B,C || "c",D) || ="d")
        !            11: end

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