This option (only available with Folder Compare mode) will present the Set Filter dialog allowing the user to specify a filter based on file extensions to determine what file types should be shown during the Folder Compare. A single file extension may be defined, i.e.:
*. txt
or a user may define multiple file extensions delimited by commas, i.e.:
*. txt,*. js,*.html
so that the matching file types may be displayed.