ps_str
if (strcmp(prop->ps_str, str) != 0)
(first) ? "" : ",", prop->namep, prop->ps_str);
#define VLDC_MDEG_PROP_NAME(specp) ((specp)[0].ps_str)
#define VLDC_SET_MDEG_PROP_NAME(specp, name) ((specp)[0].ps_str = (name))