>>-lineOut-+--------------------------+------------------------><
           +-(-+--------+-+-------+-)-+
               +-string-+ +-,line-+

Returns 0 if successful in writing string to the output stream or 1 if an error occurs while writing the line. The stream advances the write pointer. If you omit string, the stream is closed. If you specify line, this positions the write pointer before writing. If the stream is not already open, the stream attempts to open for reading and writing. If that fails, the stream is opened for output only.