-/* Insert (KEY, VALUE). If KEY already existed, overwrite the
- previous value. Uses MUSCLE_OBSTACK. De-allocates the previously
- associated value. VALUE and SEPARATOR are copied. */
+/* Append VALUE to the current value of KEY. If KEY did not already
+ exist, create it. Use MUSCLE_OBSTACK. De-allocate the previously
+ associated value. Copy VALUE and SEPARATOR. */