Linux version

To install the Unix/Linux version of TreeLD, download the package for your platform and put the file into an appropriate working directory. Then, unzip the file (``gzip -dc $<$filename$>$ $\mid$ tar xvf - ''), where $<$filename$>$ is the name of the downloaded file. Run the program by typing ``./TreeLD'' in the appropriate directory. On a Unix system, you can also install the program into a standard directory for programs, e.g., /usr/local/TreeLD. You then need to set an environment variable e.g., 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 run the program by typing TreeLD_PATH/TreeLD.