The topic of "Patterns in Protein Sequence and Structure" is of interest to a wide range of scientists, from biochemists to computer scientists, and this diversity is, to some extent, reflected by the contributions to this volume. The problems of interpreting biological sequence data are to an increasing extent forcing molecular biologists to learn the language of computers, including at times, even the abstruse language of the computerscientists themselves. While, on their side, the computer scientists have discovered a veritable honey-pot of real data on which to test their algorithms. This...