What to do when a nurse writes initials in wrong spot?

I've was taught to add a footnote, and something along the line of "1. clarification, should read "JBN" for 0800 dose for 18-Sep-2012--JBN 09/18/2012" I was always taught you cannot cross-out or directly correct someone else's information as you should be initialling/dating corrections. But you can add a clarification, just like if the nurse before you transposed a medication dose you can put a foot note "1. Clarification, should read 1.5mL (1.5mg) as per MD order dated 09/10/2012--JBN 09/18/2012". My clarifications are always backed up in my narrative note/chart/nursing flow sheet as are the rest of my nursing interventions, treatments, etc.

What has your clinical supervisor instructed you to do? What does your QA department suggest you do?