Sounds like a good starting Point. If I were to get really technical, an if is not a "function", it is a "conditional branch". If the condition in the if Statement evaluates to true, the code within the if Statement is executed, otherwise, the program will skip over (branch) to the end of the code within the if Statement. A function on the other Hand is a sub-Routine which Returns a value, such as the millis() function. In C, that value is oftion nothing, a void. Ok, so I am a Computer nerd. You're on the right track. Good luck!