and while writing there is 
NONE unless you 
point to it...
says Elmer Fudd..  as an example
to quote TDF
sometimes tone is all in how you read it....not how it was  written.....this board has more chit started because people take, what  somebody posts, the wrong way......they read it and insert their own  tone which might not be the tone that the writer intended.....I'm pretty  sure everybody has been bitten by that one time or another here.
i sure have  TDF
with inflextion.....
"of voice "
  if you ask the question VERBALLY SPEAKING NOW
are you going?  with the range of tone going up so that the word "going"  is emphasized in a higher tone....  like the English people talk...
it signifies interest, ambition, and positive replies.... 
but when you say it the opposite  
are you going?  with the range of tone going down emphasizing on the are as the highest tone and going as the lowest tone....
it signifies distain that your going or jealous envy that you get to go, surprised that your going...
or not approving of .....that..... your going,,,,   
this is what inflection of voice or tone does in 
conversation
which is totally lost in TEXT messaging unless you point to it
as in...........said like donald duck...   or   JOE BIDEN  
the smiley's help to  
denote tone as an iconic symbol of laughter or disapproval....  
or you have to read it 
thrice
and be well adept at imagining
what's written between the lines