Sandbox

<math>\nabla \, \partial x \, dx \, \dot x \, \ddot y\, dy/dx\, \frac{dy}{dx}\, \frac{\partial^2 y}{\partial x_1\,\partial x_2}</math>

File:Krnlab stickers.jpg

Awwww, we've got stickers

Is this minor edit? And this? And this?