@seealso
Music Glossary: @rglos{sharp}, @rglos{flat}, @rglos{double sharp},
-@rglos{double flat}, @rglos{Pitch names}.
-@c FIXME: add @rglos{quarter-tone}
+@rglos{double flat}, @rglos{Pitch names}, @rglos{quarter-tone}.
Learning Manual: @rlearning{Accidentals and key signatures}.
@seealso
-Music Glossary: @rglos{ottava}.
-@c FIXME? @rglos{15ma}, @rglos{8va}, @rglos{8ve}, @rgloss{octavation}
+Music Glossary: @rglos{octavation}.
Snippets: @lsrdir{Pitches,Pitches}.