 it
         in Linux.  The tar file is available at:
             www.leptonica.com/source/xtractlib-1.5.tar.gz

2. Global parameter to enable development and testing

   For security reasons, with the exception of the regression utility
   (regutils.c), leptonica as shipped (starting with 1.77) does not allow:
      * 'system(3)' fork/exec
      * writes to temp files with compiled-in names
   System calls are used either to run gnuplot or display an image on
   the screen.  

   This is enforced with a g