Ultrix um UMB UMB Scheme UMDL UML uML UMTS UN*X unary UNC UNCL UNCOL uncompression uncountable
| uncurrying undefined external reference under the hood underflow Undernet underscore undocumented feature unfold unfold/fold UNI Unicode UniCOMAL unicos Uniface unification
| Unified Han Unified Modeling Language unifier UNIFORM Uniform Naming Convention Uniform Resource Citation Uniform Resource Locater Uniform Resource Locator Uniform Resource Name Uniform Resource Number Unify unify Unify Corporation Unihan uninstaller
|