e.Digital might seriously want to look into this patent application, to judge if it's not stepping into their patented methodologies for a tree structured environment within flash. Some of e.Digitals methods are based on patented novel methods... relating to this process.

www.wipo.int/patentscopedb/en/wads2.jsp?IA=IL2005001342&LANGUAGE=EN&ID=id00000004017824&VOL=58&DOC=03490b&WEEK=25/2006&WO=06/064498&TYPE=A2&PAGE=0&DOC_TYPE=PCT