Hi Ansgar, If it's easy to do, could you please change the output value from 'source' to 'optional' (as you suggested before) while the proper way to deal with this is discussed? I guess it won't make things worse for anyone who is trying to extract something useful from this field. -- Eugene V. Lyubimkin aka JackYF, JID: jackyf.devel(maildog)gmail.com C++/Perl developer, Debian Developer