(Two-pass vertical spacing): add documentation for two-pass spacing

[lilypond.git] / Documentation / user / advanced-notation.itely

diff --git a/Documentation/user/advanced-notation.itely b/Documentation/user/advanced-notation.itely
index f446039c5c397acecf61dd1d3533424642264e0f..c5a868393de9dd067cf30908638cd64fe678b5a0 100644 (file)
--- a/Documentation/user/advanced-notation.itely
+++ b/Documentation/user/advanced-notation.itely
@@ -291,7 +291,7 @@ but it can also be used anywhere text is called in lilypond
       #'break-visibility = #begin-of-line-invisible
     \override Score.RehearsalMark #'self-alignment-X = #right
 
-    \set Staff.instrument = \markup{ \column{ Alto solo } }
+    \set Staff.instrumentName = \markup{ \column{ Alto solo } }
     c2^\markup{ don't be \flat }
     \override TextSpanner #'edge-text = #(cons (markup #:italic "rit" ) "")
     b2\startTextSpan
@@ -493,18 +493,24 @@ then set the
 
 @lilypond[fragment,verbatim]
 {
-%  \override Staff.TimeSignature #'font-name = #"Charter"
-%  \override Staff.TimeSignature #'font-size = #2
+  \override Staff.TimeSignature #'font-name = #"Charter"
+  \override Staff.TimeSignature #'font-size = #2
   \time 3/4
   c'1_\markup {
-%    \override #'(font-name . "Vera Bold")
-%      { This text is in Vera Bold }
+    \override #'(font-name . "Vera Bold")
+      { This text is in Vera Bold }
   }
 }
 @end lilypond
 
 @noindent
 Any font can be used, as long as it is available to Pango/FontConfig.
+To get a full list of all available fonts, run the command
+@example
+lilypond -dshow-available-fonts blabla
+@end example
+(the last argument of the command can be anything, but has to be present).
+
 
 The size of the font may be set with the @code{font-size}
 property. The resulting size is taken relative to the
@@ -970,13 +976,15 @@ In an orchestral score, instrument names are printed at the left side
 of the staves.
 
 This can be achieved by setting @internalsref{Staff}.@code{instrument}
-and @internalsref{Staff}.@code{instr}.  This will print a string before
+and @internalsref{Staff}.@code{instr}, or
+@internalsref{PianoStaff}.@code{instrument} and
+@internalsref{PianoStaff}.@code{instr}.  This will print text before
 the start of the staff.  For the first staff, @code{instrument} is
 used, for the following ones, @code{instr} is used.
 
 @lilypond[quote,verbatim,ragged-right,relative=1,fragment]
-\set Staff.instrument = "Ploink "
-\set Staff.instr = "Plk "
+\set Staff.instrumentName = "Ploink "
+\set Staff.shortInstrumentName = "Plk "
 c1
 \break
 c''
@@ -986,7 +994,7 @@ You can also use markup texts to construct more complicated instrument
 names, for example
 
 @lilypond[quote,fragment,verbatim,ragged-right]
-\set Staff.instrument = \markup {
+\set Staff.instrumentName = \markup {
   \column { "Clarinetti"
             \line { "in B" \smaller \flat } } }
 c''1
@@ -997,13 +1005,13 @@ If you wish to center the instrument names, you must center all of them
 @lilypond[quote,verbatim,ragged-right]
 { <<
 \new Staff {
-  \set Staff.instrument = \markup {
+  \set Staff.instrumentName = \markup {
     \center-align { "Clarinetti"
       \line { "in B" \smaller \flat } } }
   c''1
 }
 \new Staff {
-  \set Staff.instrument = \markup{ \center-align { Vibraphone }}
+  \set Staff.instrumentName = \markup{ \center-align { Vibraphone }}
   c''1
 }
 >>
@@ -1019,18 +1027,30 @@ To center instrument names while leaving extra space to the right,
 \new StaffGroup \relative
 <<
   \new Staff {
-    \set Staff.instrument
-    = \markup { \hcenter-in #10 "blabla" }
+    \set Staff.instrumentName = \markup { \hcenter-in #10 "blabla" }
     c1 c1
   }
   \new Staff {
-    \set Staff.instrument
-    = \markup { \hcenter-in #10 "blo" }
+    \set Staff.instrumentName = \markup { \hcenter-in #10 "blo" }
     c1 c1
   }
 >>
 @end lilypond
 
+To add instrument names to other contexts (such as @code{GrandStaff},
+@code{ChoirStaff}, or @code{StaffGroup}), the engraver must
+be added to that context.
+
+@example
+\layout@{
+  \context @{\GrandStaff \consists "Instrument_name_engraver"@}
+@}
+@end example
+
+@noindent
+More information about adding and removing engravers can
+be found in @ref{Modifying context plug-ins}.
+
 
 @seealso
 
@@ -1918,26 +1938,22 @@ Program reference: @internalsref{NoteHead}.
 @node Feathered beams
 @subsection Feathered beams
 
-Feathered beams are not supported natively, but they can be faked by
-forcing two beams to overlap.  Here is an example,
+Feathered beams are printed by setting the @code{grow-direction}
+property of a @code{Beam}.  The @code{\featherDurations} function
+can be used to adjust note durations.
 
-@c don't change relative setting witout changing positions!
 @lilypond[ragged-right,relative=1,fragment,verbatim,quote]
-\new Staff <<
-  \new Voice
-  {
-    \stemUp
-    \once \override Voice.Beam #'positions = #'(0 . 0.5)
-    c8[ c c c c ]
-  }
-  \new Voice {
-    \stemUp
-    \once \override Voice.Beam #'positions = #'(0 . -0.5)
-    c[ c c c c]
-  }
->>
+\featherDurations #(ly:make-moment 5 4) 
+{
+  \override Beam #'grow-direction = #LEFT
+  c16[ c c c c c c]
+}
 @end lilypond
 
+@refbugs
+
+The @code{\featherDuration} command only works with very short
+music snippets.
 
 @node Improvisation
 @subsection Improvisation
@@ -2272,7 +2288,7 @@ deliberate nonsense.
 @lilypond[quote,ragged-right,verbatim]
 {
   \override Staff.StaffSymbol #'color = #(x11-color 'SlateBlue2)
-  \set Staff.instrument = \markup {
+  \set Staff.instrumentName = \markup {
     \with-color #(x11-color 'navy) "Clarinet"
   }
   \time 2/4