Alexander Huddleston I downloaded the code from the lab pages and worked from there. I added a large flat cube as a "ground" but didn't texture it because I was tired of looking at a white abyss and thought this would make it look a little bit better. I didn't notice you implemented a "toggle key" functionality in the main and instead coded if statements in the char callback to do what I wanted. The functionality remains the same, but I thought it was worth noting.