#define SPAN_POST "</span>"
#define LABEL_FMT(s) SPAN_PREFIX s SPAN_POST
#define CHANGE_LABEL(w,fmt,val) change_label_text(w, SPAN_PREFIX fmt SPAN_POST, val)
#define SPAN_POST "</span>"
#define LABEL_FMT(s) SPAN_PREFIX s SPAN_POST
#define CHANGE_LABEL(w,fmt,val) change_label_text(w, SPAN_PREFIX fmt SPAN_POST, val)