A standard, fixed-width, 16-bit character encoding scheme that the system uses to provide NLS support for locale-specific natural languages. See also NLS.
The nonprivileged processor mode in which application code, including protected subsystem code, executes. User-mode applications cannot gain access to system data except by calling subsystem-supplied functions, which, in turn, call system services. See also kernel mode.
A block of virtual memory, dedicated to the use of the current user-mode process. Generally, the NT user space is a range of low-order virtual addresses around two gigabytes in size. See also hyperspace, kernel space, section object, and view.