It is a plain .txt file, code explorer turned off. BTW, it is in Chinese, but I think that is not the reason. I also tried to open a 1MB .txt in English (about 4500 lines), it took PSPad about 12 seconds, and Notepad2 less than 1 second.
-- <http://forum.pspad.com/read.php?2,40875,41144> PSPad freeware editor http://www.pspad.com
