First of all, I would like to thank friends here to answer my questions. I should treat you a dinner when my case is approved. I got some technique problem for packing up. 1) Should I punch holes in all documents, including precious recommendation letters? 2) What\'s the url for the holes\' positions in INS? 3) Do you use one side or two side copies? One of my referee has a 50 page CV. 4) Do you use one envelope to pack all your documents? I am thinking to use a box to hold my 200 page documents. Thanks or the help.