If you choose to use flat files (or plain-text files) as your data source, use the flat file interface (FFI) and its associated functions to open, close, read, write, and delete files on the Web server. You must specify a path for the FFI_PATH variable in the initialization file.
The file language support uses FFI functions to read from or write to files on the Web server at the Web client's request through the browser. FFI views the file as a record file, each record equivalent to a row in a Net.Data macro table variable, and each value in a record equivalent to a field value in a Net.Data macro table variable. FFI reads records from a file into rows of a Net.Data macro table, and writes rows from a table into records.
See Net.Data Reference for description and syntax of the FFI built-in functions.