As a Pointing Sign:
1. Used to refer to the signer by the signer. The sign is usually used immediately next to a verb and can mean the signer is involved in the action. English = I, me.
Note:
1. Often when signers recount an event or tell a story they sometimes briefly assume one of the roles of the characters in the story. When this happens the sign can mean 'me, as the character' (I.e., 'he' or 'she' in the story), rather than ‘me, the signer’ (thus ‘I/me’).