[syslog-ng]Logging not matched to filters

Hi I have a lot of filters and they log fine. I was wounding if it possible to make a logging that matches the rest, that isn't caught in a filter. So that if syslog-ng receives a log and it doesn't match any of the filters, it will log it into a file. That way i don't miss a logging from a device, it would simple be in this separate file. - Henning