I dont know here Rupeshhari, what we must follow, CIC main instructions or Visa office specific instructions? They visa office and CIC have very big defference between requierements. Just in my case, as you saw above proof of funds, same for work experience, they requested me only refference letter and nothing more, while following CIC and many other visa offices i red on forum, letter should contain some specific format, informations etc and include signing body cards etc. Really confuse..