On changing the number of points you have already awarded.
http://www.lingq.com/wall/post/1312894/ I have found that you cannot decrease the number of awarded points, but you can increase the number by just clicking the button again. The new number will be automatically "added" to the last number at least on this page, although you are supposed to "reset" the number in another box: "Choose Correction Option." I sense a kind of inconsistency here. You cannot understand how the system works beforehand.