==== <code>OPENOUT ‹filename›</code> ====
: Opens the specified data file for writing. It writes an ASCII file. (To close writing use the The command <code>CLOSEOUT</code>finishes writing to the file and closes it cleanly.)
: Write to the file with PRINT#9.
: No file is likely to be written until enough data is written (e.g. 2KB) or the file has at least 1 byte written and CLOSEOUT is used.