Complex sentence: The ModBook is an after-market modification that converts an Apple MacBook into a slate style Tablet PC The ModBook was introduced in the 2007 Macworld Conference & Expo and drew one of the biggest crowds, second only to iPhone.
Split into simpler sentences: The Modbook is an after-market modification that converts an Apple MacBook into a slate-style tablet computer. The Modbook was introduced in the 2007 Macworld Conference & Expo and drew one of the biggest crowds, second only to iPhone.