@end table
By adding @code{_8} or @code{^8} to the clef name, the clef is
-transposed one octave down or up, respectively. Argument @var{clefname}
+transposed one octave down or up, respectively, and @code{_15} and
+@code{^15} transposes by two octaves. The argument @var{clefname}
must be enclosed in quotes when it contains underscores or digits. For
example,