1. Smooth writing without any breakpoint or sharp curve (Even when you draw randomly and fast with the mouse) 2. Fast erasion without any trace of marks (Even when you draw randomly and fast with the mouse) 3. Smooth running of the computer and software with CPU occupation percentage less than 15% 4. Unique teaching mode synchronizing the traditional functions of blackboard design mode, annotation mode, screen mode to satisfy diversified demands 5. Extraordinarily powerful PPT import and export function without changingthe format of the original file 6. User importing images, flashes or videos and creating customerizedresources.
