INSTRUCTIONS FOR USING THE ORBITAL PLOTTING PROGRAM IN MATHEMATICA:

Save the downloaded file as, say, orbital.ma
In Mathematica, load this file as input:

        << orbital.ma <SHIFT-Enter>

Then, you can type in commands like

        orbit2p[] <SHIFT-Enter>

to generate a default 2p orbital. Help is available for various keywords
by typing, for example,

?orbit*

?orbital*

The command "orbital" provides more control over what is plotted. Please
read the help messages and the usage notes embedded in the program for
additional information.