If you only need to comment/uncomment one or multiple lines, you can use: Format :: Add/Remove comment (Ctrl+Shift+A)
For more complicated tasks: Edit :: Lines manipulation :: Insert text into lines (Alt+I) (not as simple as in Crimson but maybe more powerful). -- <http://forum.pspad.com/read.php?2,35213,35260> PSPad freeware editor http://www.pspad.com
