I've now split my current working document up into four unequal parts because although it was only 1.6mbs if I made virtually any mistake, then emacs crashed! After it had crashed three times in very quick succession I'd had enough and spilt it up. And two things are causing problems. - How can I have a file split into two parts where the first part starts with a chapter heading and then a minitoc, but the second part starts with a section heading. I wasn't able to get it to work so I had to create a new chapter heading which doesn't look right in the whole document. So how can I have the second part starting with a section heading please? - I'm currently getting error reports like this "Warning (:warning): Bibtex-completion couldn't find entry with key "0340"." All my bibliographic references are numbered and it looks like the sub-file can't see or read the bibtex file, even though they're both in the same directory. So how can I stop these error reports happening at almost every key press please? Thanks Sharon. -- A taste of linux = http://www.sharons.org.uk TGmeds = http://www.tgmeds.org.uk Debian 8.6, fluxbox 1.3.5-2, emacs 25.1.1.1