Signatures inside of door panel

[ShawnNoffy]

Hello,

I am replacing my window regulator in an 08 and found these signatures inside the door panel. Is there any significance to these? Perhaps the VOA Prez knows? (his old car)

Thank you
Shawn 31834

[bluesrt]

stuff like that is on a lot of these cars,

[ForTehNguyen]

looks like inspection marks to me