@tab c d e f g a b h
@item @code{english}
@tab c d e f g a bf b
-@item @code{espanol}
+@item @code{espanol} or @code{español}
@tab do re mi fa sol la sib si
-@item @code{italiano}
+@item @code{italiano} or @code{français}
@tab do re mi fa sol la sib si
@item @code{norsk}
@tab c d e f g a b h
@item @code{english}
@tab -s/-sharp @tab -f/-flat @tab -ss/-x/-sharpsharp
@tab -ff/-flatflat
-@item @code{espanol}
+@item @code{espanol} or @code{español}
@tab -s @tab -b @tab -ss/-x @tab -bb
-@item @code{italiano}
+@item @code{italiano} or @code{français}
@tab -d @tab -b @tab -dd @tab -bb
@item @code{norsk}
@tab -iss/-is @tab -ess/-es @tab -ississ/-isis
@tab -ih @tab -eh @tab -isih @tab -eseh
@item @code{english}
@tab -qs @tab -qf @tab -tqs @tab -tqf
-@item @code{espanol}
+@item @code{espanol} or @code{español}
@tab -cs @tab -cb @tab -tcs @tab -tcb
-@item @code{italiano}
+@item @code{italiano} or @code{français}
@tab -sd @tab -sb @tab -dsd @tab -bsb
@item @code{portugues}
@tab -sqt @tab -bqt @tab -stqt @tab -btqt
@end lilypond
@warning{Motifs to be inverted should be expressed in absolute form
-or be first converted to absolute form by enclosing them in a
+or be first converted to absolute form by enclosing them in a
@code{\relative} block.}
@seealso
@cindex transposing clef
@cindex clef, transposing
@cindex octave transposition
+@cindex optional octave transposition
+@cindex octave transposition, optional
@cindex choral tenor clef
@cindex tenor clef, choral
c2 c
@end lilypond
+Optional octavation can be obtained by enclosing the numeric
+argument in parentheses or brackets:
+
+@lilypond[verbatim,quote,relative=1]
+\clef "treble_(8)"
+c2 c
+\clef "bass^[15]"
+c2 c
+@end lilypond
+
+The pitches are displayed as if the numeric argument were
+given without parentheses/brackets.
+
Some special purpose clefs are described in @ref{Mensural clefs},
@ref{Gregorian clefs}, @ref{Default tablatures}, and @ref{Custom
tablatures}. For mixing different clefs when using cue notes within a