You will probably need to update your manual to better reflect the realities of W2K and XP systems and start leaving Win9X behind.
A user's documents (and there is more than on on my system) by DEFAULT are placed in "C:\Documents and Settings\<username>\My Documents"and shared documents are placed in "C:\Documents and Settings\All Users\Documents". These are not considered by a user to be a System folder, but a Data folder.
If, for example, a user gets a new Windows machine today, It will have XP on it. And, if they use a word processor, guess where the user's documents are placed, by default? Yep, one of thes two folders I listed above. In XP whatever is exposed to a user by default is not a system folder. And if you click on "My Documents" you end up there.
I haven't used an NT system for over 5 years, so I thought that mention in the manual was referring to one of several "NT only" idiosyncracies that were fixed in W2K an XP. The instructions are somewhat misleading.
That manual page still has some space left on it so you may wish to be less terse and give better examples.