John Kitchin writes: > You could just use regular links for this. You could setup a face function that changes the color depending on it being internal or external, or you could make separate links for them. See  > http://kitchingroup.cheme.cmu.edu/blog/2016/11/04/New-link-features-in-org-9/ for many examples of what kinds of things can be done. > > John Thanks for replying John. I don't think I was quite as explicit as I should've been. I'm exporting my org-mode documents into latex ones, which are then building a PDF, which can then be printed in black and white (with no other colours being allowed), with the ultimate aim of it being professionally printed as books. Hence my need for both, double and single line, underlines. But I'm also open to any other way of finding some other way of showing the different links, but I can only use either black or white colours. Thanks Sharon. > ----------------------------------- > Professor John Kitchin  > Doherty Hall A207F > Department of Chemical Engineering > Carnegie Mellon University > Pittsburgh, PA 15213 > 412-268-7803 > @johnkitchin > http://kitchingroup.cheme.cmu.edu > > On Wed, Dec 13, 2017 at 6:56 AM, Sharon Kimble wrote: > > For my current series of books that I'm writing in org-mode which is > being exported to latex, I need to differentiate between recipes in the > current working file, and to recipes in an external file. This is in a > series of books all containing recipes. So what I'm looking for is the > ability to use a single underline for internal, and a double underline > for external. I can do a single underline easily in org-mode, but I'm > having problems with a double underline. > > But is it the best method, using single and double underlines? Can > anyone suggest some other ways of doing it, please? Like, for instance, > can I have a reference to a particular section in another file? > > Thanks > Sharon > -- > A taste of linux = http://www.sharons.org.uk > TGmeds = http://www.tgmeds.org.uk > DrugFacts = https://www.drugfacts.org.uk > Debian 9.3, fluxbox 1.3.5-2, emacs 25.3.2, org-mode 9.1.4-2 > -- A taste of linux = http://www.sharons.org.uk TGmeds = http://www.tgmeds.org.uk DrugFacts = https://www.drugfacts.org.uk Debian 9.3, fluxbox 1.3.5-2, emacs 25.3.2, org-mode 9.1.4-2