lilypond-1.3.143

diff --git a/Documentation/user/tricks.itely b/Documentation/user/tricks.itely
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-@c -*-texinfo-*-
-@c Note:
-@c
-@c A menu is needed before every deeper *section nesting of @nodes
-@c Run M-x texinfo-all-menus-update
-@c to automagically fill in these menus
-@c before saving changes
-
-@ignore
-
-TODO
-  * cue notes
-  * different staff sizes
-  * font selection
-
-  * move some stuff to refman
-  * merge some stuff with refman entries
-  
-  * add @ref{}s to lilypond-internals:
-     @rgrob{Name} to grob
-     @reng{Name} to engraver
-
-  there's a very simple, very general noXXX mechanism; try
-
-noop   \property Staff.VoltaBrace = #'()
-yes: \property Staff.VoltaBracket = #'((meta .  ((interfaces . ()))))
-
-
-  visibility?
-  brew_molecule?
-@end ignore
-
-
-@node Tricks
-@chapter Tricks
-
-@menu
-* Manual beam settings::        Manual beam settings
-* Engraver hacking::            Engraver hacking
-* Markup text::                 Markup text
-* Apply hacking::               Apply hacking
-* Embedded TeX::                Embedded TeX
-* Embedded PostScript::         Embedded PostScript
-@end menu
-
-
-@node Manual beam settings
-@section Manual beam settings
-@cindex beams
-@cindex beam settings
-@cindex manual beams
-
-
-@c auto knees
-
-
-@cindex @code{no-stem-extend}
-
-Conventionally, stems and beams extend to the middle staff line.  This
-extension can be controlled through @code{Voice.Stem}'s grob-property
-@code{no-stem-extend}:
-
-@quotation
-@lilypond[fragment,relative,verbatim]
-  \grace a'8 a4
-  \property Voice.Stem \set #'no-stem-extend = ##t
-  \grace g8 g4 [g8 g]
-@end lilypond
-@end quotation
-
-The direction of a perfectly centred beams can be
-controlled through @code{Voice.Beam}'s grob-property
-@code{default-neutral-direction}
-
-@quotation
-@lilypond[fragment,relative,verbatim]
-  [b''8 b]
-  \property Voice.Beam \set #'default-neutral-direction = #-1
-  [b b]
-@end lilypond
-@end quotation
-
-There are several ways to calculate the direction of a beam.
-@table @code
-@item majority
-number count of up or down notes
-@item mean
-mean center distance of all notes
-@item median
-mean centre distance weighted per note
-@end table
-
-You can spot the differences of these settings from these simple
-examples:
-
-@quotation
-@lilypond[fragment,relative,verbatim]
-  [d''8 a]
-  \property Voice.Beam \set #'dir-function = #beam-dir-mean
-  [d a] 
-  \property Voice.Beam \set #'dir-function = #beam-dir-median
-  [d a]
-@end lilypond
-@end quotation
-
-@quotation    
-@lilypond[fragment,relative,verbatim]
-  \time 3/8;
-  [d''8 a a]
-  \property Voice.Beam \set #'dir-function = #beam-dir-mean
-  [d a a] 
-  \property Voice.Beam \set #'dir-function = #beam-dir-median
-  [d a a] 
-@end lilypond
-@end quotation
-
-These beam direction functions are defined in @file{scm/beam.scm}.  If
-your favourite algorithm isn't one of these, you can hook up your own.
-
-
-
-@node Engraver hacking
-@section Engraver hacking
-
-No time signature, no barlines... 
-@lilypond[verbatim]
-\score {
-  \notes \relative c'' {
-    a b c d
-    d c b a
-  }
-  \paper {
-    linewidth = -1.;
-    \translator {
-      \StaffContext
-      whichBar = #""
-      \remove "Time_signature_engraver";
-    }
-  }
-}
-@end lilypond
-
-No staff, no clef, squash pitches
-@lilypond[verbatim]
-\score {
-  \notes { c4 c4 c8 c8 }
-  \paper {
-    linewidth = -1.;
-    \translator {
-      \StaffContext
-      \remove Staff_symbol_engraver;
-      \consists Pitch_squash_engraver;
-      \remove Clef_engraver;
-    }
-  }
-}
-@end lilypond
-
-
-
-@node Markup text
-@section Markup text
-
-
-@ignore
-
-
-#(define text-flat '((font-relative-size . -2 ) (music "accidentals--1")))
-
-  \property VoiceCombineStaff.instrument = #`((kern . 0.5) (lines
-    "2 Clarinetti" (rows "     (B" ,text-flat ")")))
-
-    % Ugh, markup burps
-    \property StaffCombineStaff.instrument = #'((kern . 0.5)
-    (lines "Violoncello" (rows "     e") (rows "Contrabasso")))
-
-
-@end ignore
-
-
-
-Metrome hack...
-
-[todo: hack this into C++, use \tempo]
-
-@lilypond[verbatim]
-#(define note '(rows (music "noteheads-2" ((kern . -0.1) "flags-stem"))))
-#(define eight-note `(rows ,note ((kern . -0.1) (music ((raise . 3.5) "flags-u3")))))
-#(define dotted-eight-note `(rows ,eight-note (music "dots-dot")))
-
-\score {
-  \notes\relative c'' {
-    a1^#`((rows (font-relative-size . -1)) ,dotted-eight-note " = 64")
-  }
-  \paper {
-    linewidth = -1.;
-    \translator{
-      \ScoreContext
-      TextScript \override #'font-shape = #'upright
-    }
-  }
-}
-@end lilypond
-
-
-@c  equalizer
-
-
-@node Apply hacking
-@section Apply hacking
-
-[Add Parenthesed note head example?]
-
-[Add Smart transpose example?]
-
-
-@lilypond[verbatim]
-music = \notes { c'4 d'4( e'4 f'4 }
-
-#(define (reverse-music music)
-  (let* ((elements (ly-get-mus-property music 'elements))
-         (reversed (reverse elements))
-         (span-dir (ly-get-mus-property music 'span-direction)))
-    
-    (ly-set-mus-property music 'elements reversed)
-    
-    (if (dir? span-dir)
-        (ly-set-mus-property music 'span-direction (- span-dir)))
-    
-    (map reverse-music reversed)
-    
-    music))
-
-\score {
-  \context Voice {
-    \music
-    \apply #reverse-music \music
-  }
-  \paper { linewidth = -1.; }
-}
-@end lilypond
-
-@node Embedded TeX
-@section Embedded TeX
-@lilypond[fragment,relative,verbatim]
-  a''^"3 $\\times$ \\`a deux"
-@end lilypond
-
-@node Embedded PostScript
-@section Embedded PostScript
-
-Arbitrary lines and curves not supported...
-
-[TODO:] Make a direct postscript command?
-
-@lilypond[verbatim]
-\score {
-  \notes \relative c'' {
-    a-#"\\embeddedps{3 4 moveto 5 3 rlineto stroke}"
-    -#"\\embeddedps{ [ 0 1 ] 0 setdash 3 5 moveto 5 -3 rlineto stroke}"
-    b-#"\\embeddedps{3 4 moveto 0 0 1 2 8 4 20 3.5 rcurveto stroke}"
-    s2
-    a'1
-  }
-  \paper { linewidth = 70 * \staffspace; }
-}
-@end lilypond