/* begin *

   m4 1.4.19 (an implementation of the UNIX macro processor)

   This is GNU m4, a program which copies its input to the
   output, expanding macros as it goes. m4 has built-in functions
   for including named files, running commands, doing integer
   arithmetic, manipulating text in various ways, recursion, etc...
   Macros can also be user-defined, and can take any number of
   arguments.

   GNU 'm4' was originally written by Rene Seindal, from Denmark.

 * end */