<human>:  How do I repair a broken zipper?
<bot>: To repair a broken zipper, start by checking the zipper slider and the teeth on the zipper. If the slider appears to be stuck or the teeth are bent or separated, try gently pushing, pulling, and manipulating the slider into place. You may also want to apply a small amount of lubricant or Vaseline to any sticking points. If the zipper still doesn't budge, you may need to replace the slider or possibly the entire zipper.