set_opt()</SPAN>, with the capability of specifying starting and 
			ending addresses of data structures or instructions to be instrumented. The <SPAN style="FONT-FAMILY: 'Courier New'">
				PAPI_set_opt()</SPAN> call previously supported functionality to set a 
			variety of optional capability in the PAPI interface, including debug levels, 
			multiplexing of eventsets,<SPAN style="mso-spacerun: yes">&nbsp; </SPAN>and the 
			scope of counting domains. This call was extended with two new cases to support 