txtCommentary={\f1 Tip.} The tip of the {\uldb bow}{\v 21373} contains a plug, covered with ivory or silver, which holds the hairs of the bow in place. Tips vary in size and shape. If the scroll and f-holes are the {\uldb violin}{\v 105626} maker\'92s signature, then the tip is the bow maker\'92s. The tip is the bow\'92s weakest point; tips break easily and, once broken, they can never be completely mended. {\fs24\uldb\'80}{\v next}