Hello,

   Currently, three programs are available as part of the REPLACE program
suite---GLRF, TF, and ANGCAL. 
    
    GLRF - Rotation function program, with other options (Version 4.1)
    TF - Translation function program                    (Version 4.1)
    ANGCAL - A convenient calculator for manipulating angles/matrices/vectors

   I should also mention that I now have a new program, COMO, for
molecular replacement structure determination with an atomic model.
This essentially replaces the function of the TF program and part
of the GLRF program. 

   To load the programs, place the distribution tar file (replace.tar.gz) 
in a separate directory (for example, Replace/). Then give the commands
      gunzip replace.tar.gz
      tar -xvf replace.tar

You'll see the following sub-directories - Glrf, Tf, Test, and bin. The
Glrf and Tf directories contain the program documentation (as a TeX and a
PostScript file) and some example input files. ANGCAL has online 
documentation, just type help after starting the program.

   The program documentations are also available in HTML version through
my web site (http://como.bio.columbia.edu/tong).

   The bin directory contains the executables, for Irix6.3 and Linux
operating systems. There is also a version for Mac OS X.

   A test case is provided for the GLRF and TF programs. This is in the
directory Test. Please read the file 00readme in that directory to see what
the test cases are and how to run them. These input files can also serve
as example input files to the programs.

   I would appreciate any comments, suggestions, and especially bug reports
from the users. 

   Also, if you reference this program in your publications, please send
me the journal reference of your paper.


Best wishes
Liang
ltong@columbia.edu