When a piece of information X is sent with the performative P from agent A to agent B, the sending action is recorded in A's belief base as sent(B,P,X) and is registered in B's belief base as received(A,P,X).
When information X is transmitted from agent A to agent B through action P, it is recorded in A's belief base as sent(B,P,X) and registered in B's belief base as received(A,P,X).