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Annotation of 43BSD/contrib/icon/book/11/marker.icn, revision 1.1.1.1

1.1       root        1: procedure main()
                      2:    while line := read() do {
                      3:       marker := ""
                      4:       every i := bal('+-/*',,,line) do
                      5:          marker := left(marker,i - 1) || line[i]
                      6:       write(line,"\n",marker)  # write line and marker
                      7:       }
                      8: end

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