text: /*
   * Input/Output stream.
   */
  #ifndef IO__STREAMS__IOSTREAM_HH
  #define IO__STREAMS__IOSTREAM_HH
  
  #include <istream>
  
  namespace io {
  namespace streams {
  /*
   * Export std::iostream class.
   */
  using std::iostream;
  
  } /* namespace streams */
  } /* namespace io */
  
  #endif
  