All Reynolds Enterprises web accounts come with full access to their own cgi-bin directory. Your web site can be fully interactive by using the power of custom programs executed from your cgi-bin directory. Data Source Name (DSN): DSN stands for Data Source Name. Data Source can be a database, spreadsheet, text file etc. We assign DSN to a data source so that irrespective of the data source details and location, we can use that data source; add, modify or delete records, just by knowing its DSN.