Hi, There are situations where unused resources can end up in a pdf file; think for instance of a font system that sets up tounicode vector inclusion. For practical purposes, one needs to have a font loaded before the document preamble is scanned. If not, it is impossible to deal with certain dimensions. So, it that case, we have something \pdffontattr\font{/ToUnicode ... 0 R} But imagine that we never use that font. If the rest of the document fonts use the same vector, this is no problem, but when we switch to another font encoding, we end up with a non used to unicode vector. Or think of docs with only graphics (or other pdf pages) where no such vector is needed. Because the object reference ... 0 R is not seen, pdftex cannot decide either or not to include the object, so we need to use \immediate\obj which result sin the non wanted entry. A solution is \pdffontvector <obj num> but a more generic solution is \pdffontattr\font{/ToUnicode ... \refobjnum <objnum>} which will tag the object (number) as being used but only when the font desciption object is really flushed (so \refobjnum fullfils a signal function) this means that a (later) \pdfobj{...} will not be flushed when it is not really refered Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------