Export to a file: If you set this indicator when exporting to a file an existing file is then not overwritten, instead it is extended by appending the export to it. All the variation reports of the report group are exported to the file independently of this indicator.
Output to the printer: If you set the indicator in this case, all the variation reports are printed in a single spool request. If you do not set the indicator, a spool request is generated for each individual variation report.