"Add/Remove comments" (bound to shift-control-A) is a handy function to comment out a block of lines. The comment character is always inserted at the *start* of the line. I suggest that the insertion is in the column where the selected block starts.
Example: LINE1 LINE2 LINE3 If I select these lines starting from the "L", up to including LINE3, the commented area should then look like (assuming a # as comment character) #LINE1 #LINE2 # LINE3 instead of # LINE1 # LINE2 # LINE3 -- Ronald Fischer (Germany) <https://forum.pspad.com/read.php?4,77206,77206> PSPad freeware editor https://www.pspad.com