To run this example, type the following at the command prompt:

For Windows:
\Python26\python runNaCl.py NaCl.pdb

For Linux and Mac:
python runNaCl.py NaCl.pdb

First note which platform is being used.
Next note the Potential Energy, which should have
a negative value (about -1 or -2 kilojoule/mole).

Once the simulation is done, you can use a program like
VMD to visualize the result.  To do this, first start the
VMD application, then open NaCl.pdb (File->New Molecule...).
(it might be easier to see the visualization if you set
the "Drawing Method" to "VMD", under Graphs -> Representations).

Note that the script has no comments.  This is to keep the script
short as possible.