PU - Pool User HU - Home User UA - User agent UG - User Group UG - User Guide UAs - User Agents UA - User Agents EOU - End Of User SU - Switch User UG - User Groups UG - User Guides AU - Allowed User UE - User Element UG - User's Guide UIM - User In Mind UP - User Profile UR - User Reviews SU - Sinclair User UF - User Friendly UM - User Modeling UM - User's Manual UI - User Interface UE - user equipment EUG - End User Guide EUL - End User Layer EUT - End User Tools EUTs - End User Terms FUG - Fox User Group HUG - Hug User Group MUG - Mac User Group NUG - Net User Group NUG - New User Guide PUI - Power User Inc SUG - Sun User Group TMU - The Micro User TUG - Tex User Group UA - User Agreement UC - User Community UGD - User Guide Dog US - User Submitted VEU - Value End User WUG - Web User Group UOTD - User of the Day MUA - Mail User Agent UE - User Experience UML - User-mode Linux CUG - Cray User Group HUG - Hurd User Group JUG - Java User Group UDW - User Data Words