read_file

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          read_file() - read a file into a string

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          string read_file( string file, int start_line,
                            int number_of_lines );

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          Read a line of text from a file into a string.  The second
          and third arguments are optional.  If only the first
          argument is specified, the entire file is returned (as a
          string).

          The start_line is the line number of the line you wish to
          read.  This routine will return 0 if you try to read past
          the end of the file, or if you try to read from a
          nonpositive line.

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          write_file(3), read_buffer(3)

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