Abbrieviations, please help!

[in a mo]

Could you please help with,the meaning of these abbreviations sometimes found at the end of messages and letters- ,they are .PS and NB
Thank you
In A Mo

[anjakel]

ps=postscript
nb=notice board

[CUPID]

PS is post script
NB is nota bene

Well, I think it is...........

:-)

[MsEVP]

Sorry, in a mo, what`ve they got to do with music?

[kempie]

PS - post scriptum, a Latin expression meaning "after writing", and is often an addition after the signature of a letter; an afterthought.

NB - nota bene, a Latin phrase meaning "note well", used to draw the attention of the reader to a certain detail.

[in a mo]

MsEVP after a few hours of running through some new songs, the drummer who had been keeping tab's on what we had played ,went home for the rest of the day .
On the desk was a note for my attention which I read ,at the end ,were some other items starting with the abbreviations
listed ,I had no idea what they actually meant.
Never to late to learn or ask ,I hope this puts this straight.
Thank you
In A Mo