In addition, because there is no governing body to set standards for traditional square dancing, each caller decides which basic movements and dance figures he or she will use. There are regional variations in how dancers execute the basic movements, usually having to do with hand or arm position. The same dance figure may have different names in different regions; the same name may refer to different dance figures, or even (in the case of "do-si-do") different basic movements. This lack of standardization does not present a problem to the dancers, because at least one of two conditions is always true: either the caller walks the dancers through the figures before calling them to music, or the event is attended almost entirely by local people familiar with that caller's repertoire.