Chapter 13 demonstrates assorted system information and
shutdown functions.

abortrbt.cpp
  This code demonstrates how to abort a system shutdown.

initrbt.cpp
  This code demonstrates how initiate an abortable system 
  shutdown.

siees.cpp
  This code demonstrates the ExpandEnvironmentStrings function.

sigsi.cpp
  This code demonstrates the GetSystemInfo function.

siinfo.cpp
  This code demonstrates the GetComputerName, GetKeyboardType, 
  GetSysColor, GetSystemDirectory, GetWindowsDirectory, 
  GetSystemMetrics, GetVersion, and GetUserName functions.

silogoff.cpp
  This code demonstrates how to logoff.

sireboot.cpp
  This code demonstrates how to reboot the system. See also
  Chapter 10.
