New Delhi, Mar 06: President A P J Abdul Kalam has cancelled all functions and official engagements for the next six weeks as long as the model code of conduct for the polls to the fourteenth Lok Sabha is in force. Rashtrapati Bhavan sources said this had been done with effect from March one, since the model code came into effect on February 29. Though there is no bar on the President, who is the constitutional head of state, from attending functions, the sources said this had been done only as 'a matter of abundant caution'. Bureau Report