[Q] How to enable some features with S-Pen ?

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http://forum.xda-developers.com – Hi I recently bought a Galaxy Note 10.1 I saw some videos that people pressed the button on the s-pen and then draw on the screen and then it would capture the picture inside that drawing and they could import that into s note or message or email or ... . I googled it and unfortunately I didn't find anything . Does anyone know how to enable that feature ? does it require a software or something ? also I saw some other clips that people would draw a circle around a day in s planner and write Mike's Birthday , and the app would detect that and add an event that the day is birthday . I can (HowTos)