The Windows file is an executable installation file. Double click on the icon 
     to start the installation. You will be guided through the installation. Run the 
     program by double clicking on the TreeMap icon. 
 

    Unix/Linux 

     On a Unix system, put the file into an appropriate working directory. Then,
     unzip the  file ( gzip -dc <filename> | tar xvf -  ),  where <filename> is the 
     name of the downloaded file.   Run the program by typing  ./treeld   in the
     appropriate directory. 

     People on a Unix system can also install the program into a standard directory
     for programs, e.g.,  /usr/local/treeld. You then need to set an environment
     variable TreeLD_PATH to the TreeLD package installation directory.
     For bash users, the syntax is: 

                     TreeLD_ PATH="/usr/local/treeld" 
                       export $TreeLD_PATH 

      in the .profile file; for csh/tcsh users put 

                     setenv TreeLD PATH "/usr/local/treeld

      in .tcshrc or .cshrc. 

     You can then start the program using the shell script provided in the package 

                     $TreeLD_PATH/treeld.sh