:See also the SQ(x) command for more details.
==== <code>OPENIN ‹filename›</code> ==== : Opens the specified data file for reading. It have to be an ASCII file. ( The command closein closes reading data file. ): The stream number followed by <command>INPUT</command> has to set to #9.
==== <code>OPENOUT ‹filename›</code> ====