In reading through Rolf's excellent list of issues, I noted a comment about "illegal" datatypes. We really should use "valid" and "invalid" rather then "legal" and "illegal", since MPI is, at least not yet, the law :) Something for the 2.2 edits.... (The GNU Coding standards make a point of rejecting the use of illegal, BTW.) Bill William Gropp Paul and Cynthia Saylor Professor of Computer Science University of Illinois Urbana-Champaign *