http://www.youtube.com/watch?v=nEzs5GFN6sM&list=UU2pioW2u9AyEpQofiYOIUHw&index=1 Friends, I can not insert a video from YouTube, although such an option exists in Slideshare. If one wishes, one can see my work at the following link: http://www.youtube.com/watch?v=nEzs5GFN6sM&list=UU2pioW2u9AyEpQofiYOIUHw&index=1