+LY_DEFINE(make_duration,
+ "make-duration", 2, 0, 0, (SCM length, SCM dotcount),
+ "
+@var{length} is the negative logarithm (base 2) of the duration:
+1 is a half note, 2 is a quarter note, 3 is an eighth
+note, etc. The number of dots after the note is given by
+@var{dotcount}.
+
+
+A duration is a musical duration, i.e. a length of time described by a
+power of two (whole, half, quarter, etc.) and a number of augmentation
+dots.
+
+")