differentiate factual statements from opinions
organazation .
all of the above remembering evaluating assigning meaning
All kinds of messages can be behind codes. Codes are just a way of concealing the real meaning of mesages.
accent
Are you talking about the messages in braille? They don't say anything important really. I believe you can get the translations on serebii.net
A-s-s-i-g-n-i-n-g.
Yes. This can be done between an iOS device running iOS 6 or greater, and a Mac running OS X 10.8 or higher. For the record, the 10.8 update renamed iChat to Messages (silly right?). You can do this by assigning your Mac an email to use for Messages or connecting your Mac with your phone number to receive all iMessages your iPhone gets. You then message that email or phone number for it to appear on the Mac.
Telegraph meaning is a system for transmitting messages from a distance along a wire
body language that sends messages about what you're feeling or thinking without you meaning to.
Define processes on either end of communication. Define the types of messages. Define the syntax of messages. Define the meaning of any informational fields. Define how the messages are sent and the expected response. Define interaction with the next lower layer.
Assigning formats certainly sounds like formatting to me.