X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=Documentation%2Fnotation%2Frhythms.itely;h=cc69b76764a820681c9c64d48621526d197d949b;hb=ef06638dee8d9c3175edd6f1ae543a05e0e68c9b;hp=d46674a12a061c8fe30805af73cad894e5f4fe70;hpb=8219d572245d4856349ea0d46b439dfb3978e896;p=lilypond.git

diff --git a/Documentation/notation/rhythms.itely b/Documentation/notation/rhythms.itely
index d46674a12a..cc69b76764 100644
--- a/Documentation/notation/rhythms.itely
+++ b/Documentation/notation/rhythms.itely
@@ -7,7 +7,7 @@
     Guide, node Updating translation committishes..
 @end ignore
 
-@c \version "2.15.39"
+@c \version "2.17.11"
 
 @node Rhythms
 @section Rhythms
@@ -186,26 +186,38 @@ rests from 128th to maxima (8 x whole) may be printed.
 @cindex tuplets
 @cindex triplets
 
-@funindex \times
-@funindex times
+@funindex \tuplet
+@funindex tuplet
 
-Tuplets are made from a music expression by multiplying all the
-durations with a fraction:
+Tuplets are made from a music expression with the @code{\tuplet}
+command, multiplying the speed of the music expression by a
+fraction:
 
 @example
-\times @var{fraction} @{ @var{music} @}
+\tuplet @var{fraction} @{ @var{music} @}
 @end example
 
 @noindent
-The duration of @code{@var{music}} will be multiplied by the
-fraction.  The fraction's denominator will be printed over or
+The fraction's numerator will be printed over or
 under the notes, optionally with a bracket.  The most common
-tuplet is the triplet in which 3 notes have the duration of 2, so
-the notes are 2/3 of their written length.
+tuplets are triplets: 3@tie{}notes sound within the duration
+normally allowed for@tie{}2:
 
 @lilypond[quote,verbatim,relative=2]
-a2 \times 2/3 { b4 b b }
-c4 c \times 2/3 { b4 a g }
+a2 \tuplet 3/2 { b4 b b }
+c4 c \tuplet 3/2 { b4 a g }
+@end lilypond
+
+@cindex tuplet grouping
+@noindent
+When entering long passages of tuplets, having to write a separate
+@code{\tuplet} command for each group is inconvenient.  It is
+possible to specify the duration of one tuplet group directly
+before the music in order to have the tuplets grouped
+automatically:
+
+@lilypond[quote,verbatim,relative=2]
+g2 r8 \tuplet 3/2 8 { cis16 d e e f g g f e }
 @end lilypond
 
 @cindex tuplet bracket placement
@@ -224,7 +236,7 @@ Tuplets may be nested:
 
 @lilypond[quote,verbatim,relative=2]
 \autoBeamOff
-c4 \times 4/5 { f8 e f \times 2/3 { e[ f g] } } f4
+c4 \tuplet 5/4 { f8 e f \tuplet 3/2 { e[ f g] } } f4
 @end lilypond
 
 Modifying nested tuplets which begin at the same musical moment
@@ -296,7 +308,7 @@ Internals Reference:
 @knownissues
 Grace notes may be placed within tuplet brackets, @emph{except}
 when a staff begins with a grace note followed by a tuplet.  In this
-particular case, the grace note must be placed before the @code{\times}
+particular case, the grace note must be placed before the @code{\tuplet}
 command to avoid errors.
 
 @cindex tempo marks within tuplet brackets
@@ -380,6 +392,15 @@ Notation Reference:
 Snippets:
 @rlsr{Rhythms}.
 
+@knownissues
+The calculation of the position within a measure must take into
+account all the scaling factors applied to the notes within that
+measure and any fractional carry-out from earlier measures.  This
+calculation is carried out using rational numbers.  If an intermediate
+numerator or denominator in that calculation exceeds 2^30 the
+execution and typesetting will stop at that point without indicating
+an error.
+
 
 @node Ties
 @unnumberedsubsubsec Ties
@@ -526,11 +547,11 @@ Override @var{whiteout} and @var{layer} layout properties for ties that
 collide with other objects in a staff.
 
 @lilypond[verbatim,quote,ragged-right,relative=2]
-\override Tie #'layer = #-2
-\override Staff.TimeSignature #'layer = #-1
-\override Staff.KeySignature #'layer = #-1
-\override Staff.TimeSignature #'whiteout = ##t
-\override Staff.KeySignature #'whiteout = ##t
+\override Tie.layer = #-2
+\override Staff.TimeSignature.layer = #-1
+\override Staff.KeySignature.layer = #-1
+\override Staff.TimeSignature.whiteout = ##t
+\override Staff.KeySignature.whiteout = ##t
 b2 b~
 \time 3/4
 \key a \major
@@ -623,7 +644,7 @@ commands:
 \new Staff {
   % These two lines are just to prettify this example
   \time 16/1
-  \override Staff.TimeSignature #'stencil = ##f
+  \override Staff.TimeSignature.stencil = ##f
   % Print a maxima rest, equal to four breves
   r\maxima
   % Print a longa rest, equal to two breves
@@ -883,10 +904,10 @@ following example:}
 
 @lilypond[quote,verbatim,relative=2]
 % This fails, as the wrong object name is specified
-\override TextScript #'padding = #5
+\override TextScript.padding = #5
 R1^"wrong"
 % This is the correct object name to be specified
-\override MultiMeasureRestText #'padding = #5
+\override MultiMeasureRestText.padding = #5
 R1^"right"
 @end lilypond
 
@@ -1051,11 +1072,34 @@ Mensural time signatures are covered in
 @funindex \overrideTimeSignatureSettings
 
 In addition to setting the printed time signature, the @code{\time}
-command also sets time-signature-based default values for the properties
-@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.  The
-predefined default values for these properties can be found in
-@file{scm/time-signature-settings.scm}.  The existing default values can
-be changed, or new default values can be added:
+command also sets the values of the time-signature-based properties
+@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.
+The predefined default values for these properties can be found in
+@file{scm/time-signature-settings.scm}.
+
+The default value of @code{beatStructure} can be overridden in the
+@code{\time} command itself by supplying it as the optional first
+argument:
+
+@lilypond[quote,verbatim]
+\score {
+  \new Staff {
+    \relative c' {
+      \time #'(2 2 3) 7/8
+      \repeat unfold 7 { c8 } |
+      \time #'(3 2 2) 7/8
+      \repeat unfold 7 { c8 } |
+    }
+  }
+}
+@end lilypond
+
+Alternatively, the default values of all these time-signature-based
+variables, including @code{baseMoment} and @code{beamExceptions},
+can be set together.  The values can be set independently for several
+different time signatures.  The new values take effect when a
+subsequent @code{\time} command with the same value of the time
+signature is executed:
 
 @lilypond[quote,verbatim]
 \score {
@@ -1079,7 +1123,7 @@ be changed, or new default values can be added:
 
 @item
 @code{@var{timeSignatureFraction}}, a fraction describing the
-time signature.
+time signature to which these values apply.
 
 @item
 @code{@var{baseMomentFraction}}, a fraction containing the numerator
@@ -1194,6 +1238,10 @@ for different staves by moving the @code{Timing_translator} and the
 }
 @end lilypond
 
+A further method of changing these time-signature-related variables,
+which avoids reprinting the time signature at the time of the change,
+is shown in @ref{Setting automatic beam behavior}.
+
 @predefined
 @code{\numericTimeSignature},
 @code{\defaultTimeSignature}.
@@ -1210,8 +1258,12 @@ Music Glossary:
 
 Notation Reference:
 @ref{Mensural time signatures},
+@ref{Setting automatic beam behavior},
 @ref{Time administration}.
 
+Installed Files:
+@file{scm/time-signature-settings.scm}.
+
 Snippets:
 @rlsr{Rhythms}.
 
@@ -1362,7 +1414,7 @@ So @code{\partial 8} becomes:
 
 @lilypond[quote,verbatim,relative=1]
 \time 3/4
-\set Timing.measurePosition = #(ly:make-moment -1 8)
+\set Timing.measurePosition = #(ly:make-moment -1/8)
 e8 | a4 c8 b c4 |
 @end lilypond
 
@@ -1394,7 +1446,7 @@ occur, so use @code{\set Timing.measurePosition} instead.
 \time 6/8
 \partial 8
 e8 | a4 c8 b[ c b] |
-\set Timing.measurePosition = #(ly:make-moment -1 4)
+\set Timing.measurePosition = #(ly:make-moment -1/4)
 r8 e,8 | a4 c8 b[ c b] |
 @end lilypond
 
@@ -1445,7 +1497,7 @@ Bar numbering is resumed at the end of the cadenza.
 
 @lilypond[verbatim,relative=2,quote]
 % Show all bar numbers
-\override Score.BarNumber #'break-visibility = #all-visible
+\override Score.BarNumber.break-visibility = #all-visible
 c4 d e d
 \cadenzaOn
 c4 c d8[ d d] f4 g4.
@@ -1554,13 +1606,13 @@ Explicitly create a @code{Voice} context when starting a piece with
 @funindex timeSignatureFraction
 @funindex \scaleDurations
 @funindex scaleDurations
-@funindex \times
-@funindex times
+@funindex \tuplet
+@funindex tuplet
 
 Polymetric notation is supported explicitly or by manually modifying the
 visible time signature symbol and/or scaling note durations.
 
-@subsubheading Different time signatures with equal-length measures
+@subsubsubheading Different time signatures with equal-length measures
 
 Set a common time signature for each staff, and set the
 @code{timeSignatureFraction} to the desired fraction.  Then use the
@@ -1596,13 +1648,13 @@ affect the autobeaming rules.
     \scaleDurations 3/5 {
       \repeat unfold 2 { c8[ c c] }
       \repeat unfold 2 { c8[ c] } |
-      c4. c \times 2/3 { c8[ c c] } c4
+      c4. c \tuplet 3/2 { c8[ c c] } c4
     }
   }
 >>
 @end lilypond
 
-@subsubheading Different time signatures with unequal-length measures
+@subsubsubheading Different time signatures with unequal-length measures
 
 Each staff can be given its own independent time signature by
 moving the @code{Timing_translator} and the
@@ -1650,7 +1702,7 @@ moving the @code{Timing_translator} and the
 @cindex compound time signatures
 @cindex time signature, compound
 
-@subsubheading Compound time signatures
+@subsubsubheading Compound time signatures
 
 These are created using the @code{\compoundMeter} function.  The syntax
 for this is:
@@ -1829,7 +1881,7 @@ be done with the @code{Pitch_squash_engraver} and
     }
   }
   \new Voice \with {
-    \consists Pitch_squash_engraver
+    \consists "Pitch_squash_engraver"
   } \relative c'' {
     \improvisationOn
     c4 c8 c c4 c8 c
@@ -1909,7 +1961,7 @@ c16 c8
 @cindex beams, with melismata
 
 @warning{If beams are used to indicate melismata in songs, then
-automatic beaming should be switched off with @code{\autoBeamOff}
+automatic beaming should be switched off with @code{@bs{}autoBeamOff}
 and the beams indicated manually.  Using @code{@bs{}partcombine} with
 @code{@bs{}autoBeamOff} can produce unintended results.  See the
 snippets for more information.}
@@ -1984,23 +2036,67 @@ new beam starts.
 @funindex \set
 @funindex set
 
-In most instances, automatic beams will end at the end of a beat.
-The ending points for beats are determined by the context properties
-@code{baseMoment} and @code{beatStructure}.  @code{beatStructure}
-is a scheme list that defines the length of each beat in the measure
-in units of @code{baseMoment}.  By default, @code{baseMoment} is
-one over the denominator of the time signature.  By default,
-each unit of length @code{baseMoment} is a single beat.
+When automatic beaming is enabled, the placement of automatic beams
+is determined by three context properties:
+@code{baseMoment}, @code{beatStructure}, and @code{beamExceptions}.
+The default values of these variables may be overridden as described
+below, or alternatively the default values themselves may be changed
+as explained in @ref{Time signature}.
+
+If a @code{beamExceptions} rule is defined for the time signature in
+force, that rule alone is used to determine the beam placement; the
+values of @code{baseMoment} and @code{beatStructure} are ignored.
+
+If no @code{beamExceptions} rule is defined for the time signature
+in force, the beam placement is determined by the values of
+@code{baseMoment} and @code{beatStructure}.
+
+
+@subsubsubheading Beaming based on @code{baseMoment} and @code{beatStructure}
+
+By default, @code{beamExceptions} rules are defined for most common
+time signatures, so the @code{beamExceptions} rules must be disabled
+if automatic beaming is to be based on @code{baseMoment} and
+@code{beatStructure}.  The @code{beamExceptions} rules are disabled
+by
+
+@example
+\set Timing.beamExceptions = #'()
+@end example
+
+When @code{beamExceptions} is set to @code{#'()}, either due to an
+explicit setting or because no @code{beamExceptions} rules are defined
+internally for the time signature in force, the ending points for
+beams are on beats as specified by the context properties
+@code{baseMoment} and @code{beatStructure}.  @code{beatStructure} is
+a scheme list that defines the length of each beat in the measure in
+units of @code{baseMoment}.  By default, @code{baseMoment} is one
+over the denominator of the time signature.  By default, each unit of
+length @code{baseMoment} is a single beat.
 
 @lilypond[quote,relative=2,verbatim]
 \time 5/16
 c16^"default" c c c c |
+% beamExceptions are unlikely to be defined for 5/16 time,
+% but let's disable them anyway to be sure
+\set Timing.beamExceptions = #'()
 \set Timing.beatStructure = #'(2 3)
 c16^"(2+3)" c c c c |
 \set Timing.beatStructure = #'(3 2)
 c16^"(3+2)" c c c c |
 @end lilypond
 
+@lilypond[quote,relative=2,verbatim]
+\time 4/4
+a8^"default" a a a a a a a
+% Disable beamExceptions because they are definitely
+% defined for 4/4 time
+\set Timing.beamExceptions = #'()
+\set Timing.baseMoment = #(ly:make-moment 1/4)
+\set Timing.beatStructure = #'(1 1 1 1)
+a8^"changed" a a a a a a a
+@end lilypond
+
 Beam setting changes can be limited to specific contexts.  If no
 setting is included in a lower-level context, the setting of the
 enclosing context will apply.
@@ -2008,6 +2104,7 @@ enclosing context will apply.
 @lilypond[quote, verbatim,relative=1]
 \new Staff {
   \time 7/8
+  % No need to disable beamExceptions as they are not defined for 7/8 time
   \set Staff.beatStructure = #'(2 3 2)
   <<
     \new Voice = one {
@@ -2051,7 +2148,8 @@ compatible with the new value of @code{baseMoment}.
 
 @lilypond[quote,verbatim,relative=2]
 \time 5/8
-\set Timing.baseMoment = #(ly:make-moment 1 16)
+% No need to disable beamExceptions as they are not defined for 5/8 time
+\set Timing.baseMoment = #(ly:make-moment 1/16)
 \set Timing.beatStructure = #'(7 3)
 \repeat unfold 10 { a16 }
 @end lilypond
@@ -2065,6 +2163,8 @@ By default @code{baseMoment} is set to one over the denominator of
 the time signature. Any exceptions to this default can be found in
 @file{scm/time-signature-settings.scm}.
 
+@subsubsubheading Beaming based on @code{beamExceptions}
+
 Special autobeaming rules (other than ending a beam on a beat)
 are defined in the @code{beamExceptions} property.
 
@@ -2140,7 +2240,7 @@ if @code{beamExceptions} is not reset.
 
 @lilypond[quote,verbatim,relative=2]
 \time 4/4
-\set Timing.baseMoment = #(ly:make-moment 1 8)
+\set Timing.baseMoment = #(ly:make-moment 1/8)
 \set Timing.beatStructure = #'(3 3 2)
 % This won't beam (3 3 2) because of beamExceptions
 \repeat unfold 8 {c8} |
@@ -2157,7 +2257,7 @@ reset @code{beamExceptions}.
 \time 3/4
 % by default we beam in (6) due to beamExceptions
 \repeat unfold 6 {a8} |
-% This will beam (1 1 1) due to beatLength
+% This will beam (1 1 1) due to default baseMoment and beatStructure
 \set Timing.beamExceptions = #'()
 \repeat unfold 6 {a8}
 @end lilypond
@@ -2176,7 +2276,7 @@ r4. a8 a a |
 r4. a8 a a |
 @end lilypond
 
-@i{@strong{How automatic beaming works}}
+@subsubsubheading How automatic beaming works
 
 When automatic beaming is enabled, the placement of automatic beams
 is determined by the context properties
@@ -2197,7 +2297,7 @@ beams may end, otherwise
 
 @item
 if a beam-ending rule is defined in @code{beamExceptions}
-for a longer beam-type, use it to determined the valid places
+for a longer beam-type, use it to determine the valid places
 where beams may end, otherwise
 
 @item
@@ -2240,8 +2340,11 @@ The default beaming rules can be found in
 {beam-endings-in-score-context.ly}
 
 @seealso
+Notation Reference:
+@ref{Time signature}.
+
 Installed Files:
-@file{scm/beam-settings.scm}.
+@file{scm/time-signature-settings.scm}.
 
 Snippets:
 @rlsr{Rhythms}.
@@ -2273,7 +2376,7 @@ in only one staff.
 <<
   \new Staff {
     \time 3/4
-    \set Timing.baseMoment = #(ly:make-moment 1 8)
+    \set Timing.baseMoment = #(ly:make-moment 1/8)
     \set Timing.beatStructure = #'(1 5)
     \repeat unfold 6 { a8 }
   }
@@ -2443,14 +2546,14 @@ lengthening.  The first four 32nd notes gradually speed up, while
 the last four 32nd notes are at a constant tempo.
 
 @lilypond[relative=1,verbatim,quote]
-\override Beam #'grow-direction = #LEFT
-\featherDurations #(ly:make-moment 2 1)
+\override Beam.grow-direction = #LEFT
+\featherDurations #(ly:make-moment 2/1)
 { c16[ c c c c c c c] }
-\override Beam #'grow-direction = #RIGHT
-\featherDurations #(ly:make-moment 2 3)
+\override Beam.grow-direction = #RIGHT
+\featherDurations #(ly:make-moment 2/3)
 { c32[ d e f] }
 % revert to non-feathered beams
-\override Beam #'grow-direction = #'()
+\override Beam.grow-direction = #'()
 { g32[ a b c] }
 @end lilypond
 
@@ -2565,7 +2668,7 @@ f1 \bar "|"
 f1 \bar "."
 g1 \bar "||"
 a1 \bar ".|"
-b1 \bar ".|."
+b1 \bar ".."
 c1 \bar "|.|"
 d1 \bar "|."
 e1
@@ -2575,21 +2678,25 @@ e1
 together with dotted and dashed bar lines:
 
 @lilypond[quote,relative=1,verbatim]
-f1 \bar ":"
-g1 \bar "dashed"
+f1 \bar ";"
+g1 \bar "!"
 a1
 @end lilypond
 
 @noindent
-and five types of repeat bar line:
+and nine types of repeat bar lines:
 
 @lilypond[quote,relative=1,verbatim]
-f1 \bar "|:"
-g1 \bar ":|:"
+f1 \bar ".|:"
+g1 \bar ":..:"
 a1 \bar ":|.|:"
 b1 \bar ":|.:"
-c1 \bar ":|"
-e1
+c1 \bar ":.|.:"
+d1 \bar "[|:"
+e1 \bar ":|][|:"
+f1 \bar ":|]"
+g1 \bar ":|."
+a1
 @end lilypond
 
 Additionally, a bar line can be printed as a simple tick:
@@ -2600,6 +2707,14 @@ However, as such ticks are typically used in Gregorian chant, it is
 preferable to use @code{\divisioMinima} there instead, described in
 the section @ref{Divisiones} in Gregorian chant.
 
+Lilypond supports kievan notation and provides a special kievan
+bar line:
+@lilypond[quote,relative=1,verbatim]
+f1 \bar "k"
+@end lilypond
+Further details of this notation are explained in
+@ref{Typesetting Kievan square notation}.
+
 @cindex segno
 
 For in-line segno signs, there are three types of bar lines which
@@ -2611,13 +2726,13 @@ c4 c c c
 c4 c c c \break
 \bar "S"
 c4 c c c
-\bar "|S"
+\bar "S-|"
 c4 c c c \break
-\bar "|S"
+\bar "S-|"
 c4 c c c
-\bar "S|"
+\bar "S-S"
 c4 c c c \break
-\bar "S|"
+\bar "S-S"
 c1
 @end lilypond
 
@@ -2629,16 +2744,16 @@ a repeated section.  Such repeated sections are better entered
 using the various repeat commands (see @ref{Repeats}), which
 automatically print the appropriate bar lines.
 
-In addition, you can specify @code{"||:"}, which is equivalent to
-@code{"|:"} except at line breaks, where it gives a double bar
+In addition, you can specify @code{".|:-||"}, which is equivalent to
+@code{".|:"} except at line breaks, where it gives a double bar
 line at the end of the line and a start repeat at the beginning of
 the next line.
 
 @lilypond[quote,relative=2,verbatim]
 c4 c c c
-\bar "||:"
+\bar ".|:-||"
 c4 c c c \break
-\bar "||:"
+\bar ".|:-||"
 c4 c c c
 @end lilypond
 
@@ -2647,29 +2762,29 @@ variations:
 
 @lilypond[quote,relative=2,verbatim]
 c4 c c c
-\bar ":|S"
+\bar ":|.S"
 c4 c c c \break
-\bar ":|S"
+\bar ":|.S"
 c4 c c c
-\bar ":|S."
+\bar ":|.S-S"
 c4 c c c \break
-\bar ":|S."
+\bar ":|.S-S"
 c4 c c c
-\bar "S|:"
+\bar "S.|:-S"
 c4 c c c \break
-\bar "S|:"
+\bar "S.|:-S"
 c4 c c c
-\bar ".S|:"
+\bar "S.|:"
 c4 c c c \break
-\bar ".S|:"
+\bar "S.|:"
 c4 c c c
-\bar ":|S|:"
+\bar ":|.S.|:"
 c4 c c c \break
-\bar ":|S|:"
+\bar ":|.S.|:"
 c4 c c c
-\bar ":|S.|:"
+\bar ":|.S.|:-S"
 c4 c c c \break
-\bar ":|S.|:"
+\bar ":|.S.|:-S"
 c1
 @end lilypond
 
@@ -2677,6 +2792,100 @@ Additionally there is an @code{\inStaffSegno} command which
 creates a segno bar, placed in cooperation
 with the @code{\repeat volta} command.
 
+@funindex \defineBarLine
+@funindex defineBarLine
+@cindex bar lines, defining
+@cindex defining bar lines
+
+New bar line types can be defined with @code{\defineBarLine}:
+
+@example
+\defineBarLine @var{bartype} #'(@var{end} @var{begin} @var{span})
+@end example
+
+The @code{\defineBarline} variables can include the
+@q{empty} string @code{""}, which is equivalent to an invisible
+bar line being printed.  Or they can be set to @code{#f} which
+prints no bar line at all.
+
+After the definiton, the new bar line can be used by
+@code{\bar} @var{bartype}.
+
+There are currently ten bar line elements available:
+
+@lilypond[quote,verbatim]
+\defineBarLine ":" #'("" ":" "")
+\defineBarLine "=" #'("=" "" "")
+\defineBarLine "[" #'("" "[" "")
+\defineBarLine "]" #'("]" "" "")
+
+\new Staff {
+  s1 \bar "|"
+  s1 \bar "."
+  s1 \bar "!"
+  s1 \bar ";"
+  s1 \bar ":"
+  s1 \bar "k"
+  s1 \bar "S"
+  s1 \bar "="
+  s1 \bar "["
+  s1 \bar "]"
+  s1 \bar ""
+}
+@end lilypond
+
+The @code{"="} bar line provides the double span bar line, used
+in combination with the segno sign.  Do not use it as a standalone
+double thin bar line; here, @code{\bar} @var{"||"} is
+preferred.
+
+The @code{"-"} sign starts annotations to bar lines which
+are useful to distinguish those with identical appearance
+but different behavior at line breaks and/or different span bars.
+The part following the @code{"-"} sign is not used for building up
+the bar line.
+
+@lilypond[quote,relative=2,verbatim]
+\defineBarLine "||-dashedSpan" #'("||" "" "!!")
+
+\new StaffGroup <<
+  \new Staff {
+    c1 \bar "||"
+    c1 \bar "||-dashedSpan"
+    c1
+  }
+  \new Staff {
+    c1
+    c1
+    c1
+  }
+>>
+@end lilypond
+
+Furthermore, the space character @code{" "} serves as a placeholder
+for defining span bars correctly aligned to the main bar lines:
+
+@lilypond[quote,relative=2,verbatim]
+\defineBarLine ":|.-wrong" #'(":|." "" "|.")
+\defineBarLine ":|.-right" #'(":|." "" " |.")
+
+\new StaffGroup <<
+  \new Staff {
+    c1 \bar ":|.-wrong"
+    c1 \bar ":|.-right"
+    c1
+  }
+  \new Staff {
+    c1
+    c1
+    c1
+  }
+>>
+@end lilypond
+
+If additional elements are needed, LilyPond provides a simple
+way to define them.  For more informations on modifying or adding
+bar lines, see file @file{scm/bar-line.scm}.
 
 In scores with many staves, a @code{\bar} command in one staff is
 automatically applied to all staves.  The resulting bar lines are
@@ -2701,8 +2910,6 @@ connected between different staves of a @code{StaffGroup},
 @cindex default bar lines, changing
 @cindex bar lines, default, changing
 
-@snippets
-
 @funindex whichBar
 @funindex defaultBarType
 @funindex \bar
@@ -2723,6 +2930,9 @@ Notation Reference:
 @ref{Repeats},
 @ref{Grouping staves}.
 
+Installed Files:
+@file{scm/bar-line.scm}.
+
 Snippets:
 @rlsr{Rhythms}.
 
@@ -2771,7 +2981,7 @@ line visible}, @code{beginning of line visible}.  In the following
 example bar numbers are printed at all possible places:
 
 @lilypond[verbatim,quote,relative=1]
-\override Score.BarNumber #'break-visibility = #'#(#t #t #t)
+\override Score.BarNumber.break-visibility = ##(#t #t #t)
 \set Score.currentBarNumber = #11
 % Permit first bar number to be printed
 \bar ""
@@ -3260,8 +3470,8 @@ staves without, for example,
 
 @lilypond[quote,relative=2,verbatim]
 <<
-  \new Staff { e4 \bar "|:" \grace c16 d2. }
-  \new Staff { c4 \bar "|:" d2. }
+  \new Staff { e4 \bar ".|:" \grace c16 d2. }
+  \new Staff { c4 \bar ".|:" d2. }
 >>
 @end lilypond
 
@@ -3271,8 +3481,8 @@ durations in the other staves.  For the above example
 
 @lilypond[quote,relative=2,verbatim]
 <<
-  \new Staff { e4 \bar "|:" \grace c16 d2. }
-  \new Staff { c4 \bar "|:" \grace s16 d2. }
+  \new Staff { e4 \bar ".|:" \grace c16 d2. }
+  \new Staff { c4 \bar ".|:" \grace s16 d2. }
 >>
 @end lilypond
 
@@ -3314,19 +3524,19 @@ error will be generated.  Either make the grace notes shorter in
 duration, for example:
 
 @example
-\acciaccatura @{ c'8[ d' e' f' g'] @}
+c'8 \acciaccatura @{ c'8[ d' e' f' g'] @}
 @end example
 
 becomes:
 
 @example
-\acciaccatura @{ c'16[ d' e' f' g'] @}
+c'8 \acciaccatura @{ c'16[ d' e' f' g'] @}
 @end example
 
 Or explicitly change the musical duration:
 
 @example
-\acciaccatura @{ \scaleDurations 1/2 @{ c'8[ d' e' f' g'] @} @}
+c'8 \acciaccatura @{ \scaleDurations 1/2 @{ c'8[ d' e' f' g'] @} @}
 @end example
 
 See @ref{Scaling durations}.
@@ -3436,11 +3646,11 @@ The next bar line then falls at 9/8 rather than 5/4.
 
 @lilypond[quote,verbatim]
 \new Voice \relative c' {
-  \set Timing.measureLength = #(ly:make-moment 5 4)
+  \set Timing.measureLength = #(ly:make-moment 5/4)
   c1 c4 |
   c1 c4 |
   c4 c
-  \set Timing.measurePosition = #(ly:make-moment 5 8)
+  \set Timing.measurePosition = #(ly:make-moment 5/8)
   b4 b b8 |
   c4 c1 |
 }