Output will be directed to an IFS file when the "destination" property is set on the record format. This property specifies the path to an IFS file which will receive the content. All output from any record format in the display file will be directed to this file. The "existing file action" property can be used to control the behavior when the target file already exists on the file system.
When a program is producing file output, it need not be called from the Web Connector. The program can be called from a command line, another program, etc., to produce its output.