For the memory test ,it's really very simple ,i just compare them in taskmgr and maybe not exactly.And I am only wished when the program completed, it will not cost too much system resources.

The question is it only another high edition of rhino, I mean will MIO be another caid software to instead rhino or alias?May be for a beta version I expect to much because i really like it :) I am sorry about my poor english ~

And there is a problem confused me now , how did the history command works?