Event definitions can be replaced by means ofthe is only keywords. Example 7-4 illustrates event redefinition.
Example of event redefinition using the is only keywords <' struct m_str { event start_ct; event top_clk is fall('~/top/r_clk') @sim; event stop_ct is {@start_ct; [1]} @top_clk; //Original definition }; extend m_str { event stop_ct is only {@start_ct; [3]}@top_clk; //Event //redefinition }; '>