 Dear User,

 thanks for using our program. It has been written in FORTRAN 77
 and was tested on a DEC Microvax, DEC ALPHA 3000 (VMS and Unix),
 SGI and PDP10.  
 A short description is given at the beginning of the FORTRAN text.
 Test input and output files are enclosed.
 You are free for use and further distribution, provided that the
 program is adequately cited: 

  Jessen, S. M. & Kuppers, H. (1991). J. Appl. Cryst. 24, 239-242. 

 Have fun, Sven M. Jessen


