Interesting: http://www.xmlscript.org/ I wonder how this would merge with the Workflow Diagram's "graphical command language". Jeff -- +------------------------------------+ | | | J.W. Bizzaro | | jeff at bioinformatics.org | | | | THE OPEN COLLABORATORY | | FOR MOLECULAR BIOINFORMATICS | | | | http://bioinformatics.org/ | | | +------------------------------------+