txtCommentary={\f1 Chin Rest.} This well-worn piece of hardwood helps the player to hold the {\uldb violin}{\v 105626} or {\uldb viola}{\v 105422} using the jawbone for leverage. The chin rest came into use during the nineteenth century. {\uldb String}{\v 97871} players during Mozart\'92s lifetime would not have known about such a device. Today, due to the increased tension on the strings and the resulting increase in {\uldb bow}{\v 21373} pressure, use of a chin rest is mandatory. {\fs24\uldb\'80}{\v next}
