... thuy T PowerPoint 2010 2 s dng tip tp tin th phc. B t tp tin m ThuchanhPowerPoint2010_Ch6.pptx. ... th 1. M tp tin ThuchanhPowerPoint2010_Ch6.pptx 2. Insert Text, chn lnh Header & Footer, hp thoi Header and Footer xut hin. PowerPoint 2010 3 ... PowerPoint 2010 1 ,xem....