-- Data format is changed(08.12) -- realized the compression function(08.12) -- revised the error which double click file couldn't show the file content(08.01) -- revised the error which document item couldn't show normally(08.01) -- revised the error when deleted the files consecutively the program would down(07.31) -- revised the errow when use chinese setup path would wrong(07.29) -- added the confirmation whether remove the data folder -- Some bugs were fixed