-@node Note heads
-@subsection Note heads
-
-@menu
-* Easy notation note heads::
-* Shape note heads::
-* Improvisation::
-* Special noteheads::
-@end menu
-
-@node Easy notation note heads
-@unnumberedsubsubsec Easy notation note heads
-
-@cindex note heads, practice
-@cindex note heads, easy notation
-@cindex easy notation
-@cindex Hal Leonard
-
-The @q{easy play} note head includes a note name inside the head.
-It is used in music for beginners
-
-@lilypond[quote,ragged-right,verbatim,fragment,staffsize=26]
- \setEasyHeads
- c'2 e'4 f' | g'1
-@end lilypond
-
-The command @code{\setEasyHeads} overrides settings for the
-@internalsref{NoteHead} object. To make the letters readable, it
-has to be printed in a large font size. To print with a larger
-font, see @ref{Setting the staff size}.
-
-@refcommands
-
-@funindex \setEasyHeads
-@code{\setEasyHeads}
-
-
-@node Shape note heads
-@unnumberedsubsubsec Shape note heads
-
-@cindex note heads, shape
-
-In shape note head notation, the shape of the note head
-corresponds to the harmonic function of a note in the scale. This
-notation was popular in the 19th century American song books.
-
-Shape note heads can be produced by setting @code{\aikenHeads} or
-@code{\sacredHarpHeads}, depending on the style desired.
-
-@lilypond[verbatim,relative=1,fragment]
- \aikenHeads
- c8 d4 e8 a2 g1
- \sacredHarpHeads
- c8 d4. e8 a2 g1
-@end lilypond
-
-Shapes are determined on the step in the scale, where the base of
-the scale is determined by the @code{\key} command
-
-@funindex \key
-@funindex shapeNoteStyles
-@funindex \aikenHeads
-@funindex \sacredHarpHeads
-
-Shape note heads are implemented through the
-@code{shapeNoteStyles} property. Its value is a vector of
-symbols. The k-th element indicates the style to use for the k-th
-step of the scale. Arbitrary combinations are possible, e.g.
-
-@lilypond[verbatim,relative=1,fragment]
-\set shapeNoteStyles =
- ##(cross triangle fa #f mensural xcircle diamond)
-c8 d4. e8 a2 g1
-@end lilypond
-
-
-@node Improvisation
-@unnumberedsubsubsec Improvisation
-
-Improvisation is sometimes denoted with slashed note heads. Such
-note heads can be created by adding a
-@internalsref{Pitch_squash_engraver} to the @internalsref{Voice}
-context. Then, the following command
-
-@example
-\set squashedPosition = #0
-\override NoteHead #'style = #'slash
-@end example
-
-@noindent
-switches on the slashes.
-
-There are shortcuts @code{\improvisationOn} (and an accompanying
-@code{\improvisationOff}) for this command sequence. They are
-used in the following example
-
-@lilypond[verbatim,ragged-right,quote]
-\new Voice \with {
- \consists Pitch_squash_engraver
-} \transpose c c' {
- e8 e g a a16(bes)(a8) g \improvisationOn
- e8
- ~e2~e8 f4 fis8
- ~fis2 \improvisationOff a16(bes) a8 g e
-}
-@end lilypond
-
-
-@node Special noteheads
-@unnumberedsubsubsec Special noteheads
-
-@cindex note heads, special
-
-Different noteheads are used by various instruments for various
-meanings -- crosses are used for @q{parlato} with vocalists,
-stopped notes on guitar; diamonds are used for harmonics on string
-instruments, etc. There is a shorthand (@code{\harmonic}) for
-diamond shapes; the other notehead styles are produced by tweaking
-the property
-
-@lilypond[ragged-right,relative=1,fragment,verbatim,quote]
-c4 d
-\override NoteHead #'style = #'cross
-e f
-\revert NoteHead #'style
-e d <c f\harmonic> <d a'\harmonic>
-@end lilypond
-
-@noindent
-To see all notehead styles, please see @ref{Note head styles}.
-
-
-@seealso
-
-Program reference: @internalsref{NoteHead}.
-
-
-