The ref manual says: 9.1 Procedure Sets The PDF operators used in content streams are grouped into categories of related operators called procedure sets (see Table 9.1). Each procedure set corresponds to a named resource containing the implementations of the operators in that procedure set. The ProcSet entry in a content stream's resource dictionary (see Section 3.7.2, "Resource Dictionaries") holds an array consisting of the names of the procedure sets used in that content stream. These procedure sets are used only when the content stream is printed to a PostScript output device; the names identify PostScript procedure sets that must be sent to the device to interpret the PDF operators in the content stream. Each element of this array must be one of the predefined names shown in Table 9.1. (See implementation note 102 in Appendix H.) TABLE 9.1 Predefined procedure sets NAME CATEGORY OF OPERATORS PDF Painting and graphics state Text Text ImageB Grayscale images or image masks ImageC Color images ImageI Indexed (color-table) images Note: Beginning with PDF 1.4, this feature is considered obsolete. For compatibility with existing viewer applications, PDF producer applications should continue to specify procedure sets (preferably all of those listed in Table 9.1, unless it is known that fewer are needed). However, viewer applications should not depend on the correctness of this information. So ... i think that pdftex can omit that strange animal from now on or maybe optionally do so Hans ------------------------------------------------------------------------- Hans Hagen | PRAGMA ADE/POD/CTS Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com ------------------------------------------------------------------------- information: http://www.pragma-ade.com/roadmap.pdf documentation: http://www.pragma-ade.com/showcase.pdf -------------------------------------------------------------------------