A comma-separated list of file name extensions for the files that you want returned in addition to the extension specified in the Data File Extension field.
Valid Values
ext | NONE
where:
ext
is a file name extension.
To have files with no extensions returned, specify NONE. For example, if some of your files have the extensions TXT and CSV and others have no extension, specify TXT,CSV,NONE.
By default, when an application requests a list of tables, only files that have been defined are returned.
Notes
You must have also enabled the Files with Matching Extensions option.
ExtraExtensions (EE)
You must have also enabled the Files with Matching Extensions option.