VERSION {
	VERS_1.1 {
		 global:
			 foo1;
		 local:
			 hide_old*; 
			 hide_original*; 
			 hide_new*; 
	};
	
	VERS_1.2 {
			 foo2;
	} VERS_1.1;
	
	VERS_2.0 {
			 show_bar1; show_bar2;
	} VERS_1.2;
}