The system registry (you can browse it using the Regedt32.exe or Regedit.exe tools that comes with Windows) contains keys and their values in a hierarchical tree structure. The registry contains a number of hives. DirectScript supports two of these: HKEY_LOCAL_MACHINE and HKEY_USERS. A key can contain one or more values. A key always has a default value. You should use the empty string ("") to refer to it. A value has data associated with it.