Three small comments on the spec: 1. in Sec 6.4.3.1, it is not clear if "may" or "must" should be used. The example further confuses me. 2. in Sec 6.5.3.1, it refers to the WorkingDirectory element. Is it correct to refer to an extension explicitly in the base specification? 3. Appendix 2 is missing quotes around some of the attributes on the <schema> element. Cheers, Ian -- Ian Stokes-Rees i.stokes-rees@physics.ox.ac.uk Particle Physics, Oxford http://www-pnp.physics.ox.ac.uk/~stokes