Multi-user-domain Object Oriented (MOO)
USER User System EvaluatoR
User-User Signaling UUS
domain-domain interactions DDI
pseudo-spectral time domain domain (PSTD)
SSCOP User-to-User Information
User-to-User Indicators
User-to-User Information
User-to-User Information Message
user-to-user interface level
user-to-user signalling (UUS)
USR (User-To-User Information Message)
UUI User – to – User Indicators
UUI User C to C User Indicators
UUI User to User Information