Pablo Halpern , lead consultant at Halpern-Wight Software, Inc. His experience includes: C++ (since 1989), C (since 1982), Pascal, Visual Basic, Perl, Korn Shell, Assembly languages (680x0, 80x86, others) and several others. Operating Systems: Unix, MS Windows NT, OS/2, MS-DOS, VMS. Window and Graphics Packages: X.11/Motif, MS Windows, Presentation Manager, Macintosh, and others. Pablo is currently involved with the design and implementation of a distributed book-on-demand publishing system and is designing and implementing a general-purpose workflow manager designed using UML and the Rational Rose modeling tool.