Read some input

Thanks, ILikePi! (from input)

HAI
CAN HAS STDIO?
I HAS A VAR
GIMMEH VAR
VISIBLE "You said " N VAR N " !!"
KTHXBYE

GIMMEH wins out over TXT ME A for inputting a line from the user.

N is particularly evil choice for a keyword, I think, but it feels right as a conjunction, akin to a comma in many other languages. I'm not keen on adding too many punctuation marks beyond ”, !, and ?.