For Mac OS X users:

cisortho cannot be run by clicking the icon (I would have
liked to implement this feature, but could not...)

To run cisortho (or cis) follow these steps:

1.  open a terminal.
2.  at the prompt, type:
cd <dir>
where <dir> is the directory (e.g. /Users/joe/) where you downloaded
cisortho and cis.
3.  type:
ls -la cisortho
you will see something like:
-rwxr-xr-x    1 joe    joe     2643236 Jan 16 15:57 cisortho
4.  if the file is not 'executable', i.e. does not have 'x' in
the permissions string, type:
chmod 755 cisortho
5.  launch by typing:
./cisortho

At this point, you should see the CisOrtho welcome message, which will guide
you further.