What should a generic emotion markup language be able to represent

@inproceedings{pub2963,
    author = {

Schröder, Marc
 and 

Devillers, L.
 and 

Karpouzis, K.
 and 

Martin, J.-C.
 and 

Pelachaud, C.
 and 

Peter, C.
 and 

Pirker, H.
 and 

Schuller, B.
 and 

Tao, J.
 and 

Wilson, I.
},
    editor = {

Paiva, A.
 and 

Prada, R.
 and 

Picard, R.W.
},
    title = {What should a generic emotion markup language be able to represent},
    booktitle = {Proceedings of the 2nd International Conference on Affective Computing and Intelligent Interaction. IEEE International Conference on Affective Computation and Intelligent Interaction (ACII-2007), Lisbon, Portugal},
    series = {LNCS},
    year = {2007},
    month = {9},
    volume = {4738},
    publisher = {Springer}
}