I must not tell lies

[Arya]

No: HPFGUIDX 88921

annemehr wrote:
<SNIP>how important is it that Harry now carries a scar on his right 
hand: "I must not tell lies?"
Personally, I think this must have importance beyond the battle of
wills between Harry and Umbridge.

Arya now:  
Just a question, but do we have canon to support the assumption the 
quill left scars that are still visible?  We know Harry had to nurse 
the wounds and such and even eased the pain with the Murlap but are 
we just assuming there is now an indelible etching of "I must tell 
lies" in the form of a scar or do we know this from the book?  I just 
can't recall and everyone seems to always assume or know he does.  

The reason I wonder about this detail is because I've been trying to 
think about clues as to whether Harry might be a metamorphamagus or 
not.  It's obvious from Tonks the skill allows her to change facial 
features and hair.  She also comments to Harry that if he had the 
skill he might be able to cover up his scar.  Now, aside from 
wondering whether his curse scar is an ordinary enough scar to be 
treated like this, I went back and thought of the other scars Harry 
should have and whether he still has them.  If he were a m-magus, 
then he might be able to heal/cover the scars from the quill by 
simply loathing them and wishing them away.  

Just my thoughts...