For a while now I have been working on a modified, but so far as possible fully functional, version of R in which the interpreter is progressively refactored (reengineered) from C to C++. The work is still at an early stage, but I think that sufficient progress has now been made for it to be of interest to some readers of this list. Further information is at http://www.cs.kent.ac.uk/projects/cxxr Andrew Runnalls -- Dr Andrew Runnalls, Computing Laboratory, University of Kent, CANTERBURY CT2 7NF, UK Tel: (0)1227 823821