http://tetzzang.com/%ec%9a%b0%eb%b6%84%ed%88%ac-thinkpad-x200%ec%97%90%ec%84%9c-trackpoint-%ed%9c%a0%eb%b2%84%ed%8a%bc-%ec%82%ac%ec%9a%a9%ed%95%98%ea%b8%b0/
[우분투] ThinkPad X200에서 TrackPoint 휠버튼 사용하기