Yutaka Emura

It looks that you did not choose a correct encoding when you open a file. The “Auto Detect” feature does not always detect correct encodings, and sometimes you will need to re-select correct encodings even if you use the Auto Detect feature. To do this, after you open a file, double-click the encoding name on the status bar (right-side on the bottom), and you will see the list of available encodings to choose from.