+ Each note is not an isolated island. The Notes Association feature allows you to associate one note with another for conceptual proximity or relationship. For example, a note about auto engine ignition is related to another note about auto engine induction, and both of them are related to a note about auto engine; associations which this feature allows you to draw, organizing information while helping you to better understand the relationships.
Researches conducted by cognitive scientists and psychologist have proven its effectiveness in learning.
See the New York Times report for more details, URL,
http://www.nytimes.com/2010/09/07/health/views/07mind.html?src=twt&twt=nytimes
Result: More effective learning.