Thanks starzibal,Kandel,Snspring,SuzanG,spons and Gaggidhillon.
Thanks a lot.
Spons I think it is only medical and police clearance ,background check from local visa offices.
I never heard of anything unless a realy bad health problem or if your dependent is over 22 and can't provide proof of continue studies then it could be a problem.I don't think so they are going to check these documents.you know f they want something instead of getting from file they ask you to provide again.T4 and birth certificates are an example.
I was wondering are they going to ask us for local visa office specific forms?