Thank you for offering to help. I uploaded the same image in both EPS and PDF format. The EPS was produced on a Sun system (wally). There are 2 PDF files respectively generated on the same Sun system and on a Linux/Red-Hat nodes cluster (heimdall). The files can be accessed at the following URL: http://www.trusoftdev.za.net/maura I'd like to summarize the history of such files. The EPS file has been created by a Tcl/Tk program through saving to the disk the canvas image. The Tk code that generates the EPS file can be found in the Tk generic dir in the Tk source distribution TkCanvasPs.c or something like it (see: http://tktoolkit.cvs.sourceforge.net/tktoolkit/tk/generic/tkCanvPs.c?... and http://tktoolkit.cvs.sourceforge.net/tktoolkit/tk/generic/prolog.ps?v... ) The PDF files were generated on both systems by ps2pdf13. I also uploaded two TXT files , "Heimdall-Info.txt" and "Wally-Info.txt", containing all the info that I could find about the two platform (wally and heimdall) on which "ps3pdf13" produces different results. Thank you in advance, Maura Edelweiss M.