Say

Syntax:
say [message]

Allows you to say something to everybody in the same room as you.

Note that ' (single quotation mark) is aliased to 'say', so ' [message] will have the same effect.

Whisper

Syntax:
whisper [player] [message]

This command is used to whisper a message to another player who is in the same room as you without other players being able to hear what you are saying.

Shout

Syntax:
shout [message]

Allows you to 'shout' a message to all the people who are located in the same area you are in. Your message will not carry through the wilderness.

Smiles

Say it with a smile.
To say things with various facial expressions, just include the face anywhere in what you say.

Ex: say Hi there, how're you? :)

This will produce the line:

You smile and ask, "Hi there, how're you?".

The above line could also be created by typing:

say :) Hi there, how're you?

Or even:

say Hi there, :) How're you?

The facial expressions and moods are as follow:

To state something, end the sentence with a period no punctuation mark. (.)
To ask something, end the statement with a question mark. (?)
To exclaim something, end the sentence with an exclaimation mark. (!)

Any facial expressions can be used with any of the above moods. They are:

:) smile
:} wry smile
:> grin
;) wink
:( frown
:{ wry frown
:< pout

also acceptable:

:-) smile
(: smile
): frown
(-; wink
;-( frown and wink
etc, etc, etc.