Gets the root of the user's profile on a Windows NT-based system.
A string naming the path, or
obtains the path to the current user's profile folder on a Windows NT-based system (including NT, Windows 2000 and Windows XP).
is implemented only on Windows.
names the root of the profile directory.
Note that the default path for each user's profile may differ between versions of the operating system.
On Windows NT4.0:
On Windows 98 SE:
LispWorks Reference Manual - 20 Jul 2006