18 kinds of smile

According to Drs. Paul Ekman, psychology, University of California at San Francisco, there are 18 kinds of smiles. Each smile using a combination of a slightly different muscles and convey different messages. Among the types of smiles among others:
1.A forced smile, a smile that was not intentional spread to the eye.

2.Grin, pulling back the corner of his mouth, thus showing teeth.

3.Closed mouth smile, this smile is a sign of appreciation, is a polite way.

4.Open smile, smile shows teeth over and told others that he wanted to meet.

5.His lips pursed, if someone pursed her lips, it means he feels attracted to the opposite sex.

6.Lips tense, states of tension or disagreement in the liver.

7.Bit seeds, if someone bit her lower lip and shook his head, this person is expressing his anger.
8.Finger touching the index finger in a vertical lip, said please calm down.

9.Finger finger touching the lower lip and mouth slightly open, declared, I want to talk to you.
Source:

Body Talk, L.A. Justice, 2000, over language, body language, Nan Irwin Lim Sen, Interaksara, 2000