Embodiments of methods and/or systems of manipulating tree expressions are disclosed. In one particular example, a tree expression may represent information and/or data in one particular view among a plurality of views. Further, in another particular example, a tree expression representing information...http://www.google.com.tw/patents/US7627591?utm_source=gb-gplus-share專利 US7627591 - Method and/or system for manipulating tree expressions
