SHANMUGASUNDARAM 29th Aug 2014 at 10:32 am	sorry sir/madam, could not understand, pl. explain in detail
GK Ramakrishnan 12th Apr 2014 at 02:33 pm	presentation of data is lacking. write by steps.. or use table or diagram to explain... the writer needs to explain in laym an , lucid language keeping in mind the reader need to understand.. and you need to use graphics, di agram to explain it will be very effective, useful