1902
Hell freezes over, MS Paint adds support for layers and PNG transparency
(arstechnica.com)
This is a most excellent place for technology news and articles.
Excellent! Now I can draw things on the wrong layer in yet another program
Have you tried using descriptive layer names like layer 1, later 2, later 3?
Layer 1, Later 2, Lazer 3.
FTFY
Or just use only one layer.