-e: Turn on automatic file-name completion

When the -e option is in effect, FWEB attempts to be helpful in figuring out what file name one intends. For any input file name that has no extension (no embedded period), FWEB completes the name by adding the extension contained in the style-file parameter listed in the following table:

             Type of file      Style-file entry        Default
             WEB file            ext.web        web
             Change file         ext.ch         ch
             Include file        ext.hweb       hweb
             Change file
              for include file   ext.hch        hch
     

More than one extension may be specified, as a space-delimited list--e.g., ext.web = "web wb"; the first one that matches is used.