Hello, I have found how to set a temporary directory for org-babel export files (using org-babel-temporary-directory), but I cannot find how to specify that, by default (i.e., unless specified with a "file" option), files should be exported to a temporary directory.
My motivation for this is that I keep a single folder with many org-mode files, some of them for presentations, papers, or letters. I regularly have to go in there and get rid of all the .tex, .log, .pdf, .aux, etc., that accumulate. Thanks, Alan