Clearing a Crystal for Re-Programming; Why, When and How to Clear

I’ve had a few questions recently about clearing crystals; why to clear them, when, and how. Even though I have covered this topic, it hasn’t had a post all its own, so we’ll just revisit this extremely easy but very important topic. WHAT DOES IT MEAN TO “CLEAR” A CRYSTAL? I would compare clearing a crystal to the deleting of erasable files on your computer. It still works just as it did, anything saved to