A .joboptions file is a settings file that you use with Acrobat Distiller. It holds all the relevant distilling options for a particular type of PDF (ie. Screen, Print, Press). Sometimes if you are supplying artwork as a PDF to a pre press department they will supply you with a .joboptions file so you can make a PDF with distiller to their spec.
What I don't understand is why you cannot use these options within InDesign, and why Indesign has its own PDF settting files as .pdfs
Anyone any ideas?
TIA