Hello Hiroaki
Very handy plugin. But there is just one thing that doesn't seem to be working properly. I don't know if its just me, but I can't seem to get fields I create as RTEs to save line breaks or paragraph breaks when I press enter. They just get saved as the text version of new-lines or the "\n".
If no one else has experienced this, I would be quite surprised. I tested on two separate installations and also disabled all other plugins.
Thanks
Nigel