Let me first apologize for the lightness of the images in some of the manuals, a few of which are almost invisible! But the code works and will show you what was supposed to be there.

If you're using the multivariable manual, you need the Vectors package. You can get it by clicking Vectors.m.zip and unzipping the file. Once you do that, put the Vectors.m file in Mathematica's Applications folder. (To learn where that is, enter $InstallationDirectory in Mathematica.)

An alternative to installing the package is to load it remotely by entering the following command:

    Import["http://www.math.armstrong.edu/faculty/hollis/mmacalc/Vectors.m"]

That takes the place of either of <<Vectors` or Needs["Vectors`"]. Amazing, huh?

The Vectors package will soon be updated for Mathematica 7.