(AGI) Milan, Sept 12 - Piazza Affari closed flat on Friday atthe end of a session with few transactions. The Milan stockexchange was in line with the major European stock markets,which have been cautiously awaiting next week's Federal Reservemeeting and the results of the referendum on Scottishindependence. At session's close the FTSE MIB lost 0.1 percentto 21,071 points and the All Share 0.07 percent. Energy stockswere mixed, with Eni shedding 0.48 percent and Enel gaining0.38 percent. Mps performed well, gaining 2.87 percent, aftertwo advisors resigned in favour of the entry of representativesdesignated by foreign stockholders. . .