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+While teaching a data structures course at University of California,
+Irvine, I developed a program called GPERF that generates perfect hash
+functions for sets of key words.  A perfect hash function is:
+
+          A hash function and a data structure that allows 
+          recognition of a key word in a set of words using 
+          exactly 1 probe into the data structure.
+
+The gperf.texinfo file explains how the program works, the form of the
+input, what options are available, and hints on choosing the best
+options for particular key word sets.  The texinfo file is readable
+both via the GNU emacs `info' command and is also suitable for
+typesetting with TeX.
+
+The enclosed Makefile creates the executable program ``gperf'' and
+also runs the regression tests.
+
+Output from the GPERF program is used to recognize reserved words in
+the GNU C, GNU C++, and GNU Pascal compilers.  In addition, it is used
+by TAO'd IDL compiler to generate operation dispatching tables.
+
+For more information on GPERF, please see
+
+http://www.cs.wustl.edu/~schmidt/PDF/gperf.pdf
+
+Happy hacking!
+
+Douglas C. Schmidt
+schmidt@cs.wustl.edu