Revert "Tempo and Rehearsal marks horizontal positioning; issue 3279"

[lilypond.git] / Documentation / changes.tely

diff --git a/Documentation/changes.tely b/Documentation/changes.tely
index 951dabd22bf86dbba406bf8e05e3fe5f7c6d9f19..683cdb54fc88e62d6c63f9121911e46d31420160 100644 (file)
--- a/Documentation/changes.tely
+++ b/Documentation/changes.tely
@@ -61,6 +61,21 @@ which scares away people.
 
 @end ignore
 
+@item
+Grob @code{OctavateEight} was renamed to @code{ClefModifier}.
+Related context properties were renamed from @code{xxxOctavationyyy}
+to @code{xxxTranspositionyyy}.
+
+@item
+There is a new @code{\absolute} command explicitly marking music
+as being entered in absolute pitch.  While this has been the
+default previously, an explicit @code{\absolute} also prevents
+reinterpretation when the passage is placed inside of
+@code{\relative}:
+@lilypond[verbatim,quote]
+\relative c { c'4 \absolute { f'' g'' } c }
+@end lilypond
+
 @item
 When @code{\relative} is used without an explicit reference pitch,
 the reference pitch now is the middle of the first octave, making
@@ -150,6 +165,41 @@ contains @code{\transposition}.  Previously,
 was equivalent to @code{\transposition f'}.  Now it stays
 equivalent to @code{\transposition bes'}.
 
+@item
+When checking for collisions, LilyPond no longer treats objects as
+rectangles.  Instead, the actual shape of objects is approximated
+using an integral-like approach.  This generally results in more
+even and snug positioning of objects and systems:
+
+@lilypond[relative=1]
+#(ly:set-option 'debug-skylines #t)
+\dynamicUp
+c'4\f a4\f d\f( f)
+a,4\< c c c\!
+d4-.\downbow a4^"r'venu..." c \tempo "T1" e
+@end lilypond
+
+Previously, the above snippet looked like this:
+
+@lilypond[relative=1]
+#(ly:set-option 'debug-skylines #t)
+\override Hairpin #'vertical-skylines = #'()
+\override DynamicText #'vertical-skylines = #'()
+\override TextScript #'vertical-skylines = #'()
+\override Score.MetronomeMark #'vertical-skylines = #'()
+\override Staff.Clef #'vertical-skylines = #'()
+\dynamicUp
+c'4\f a4\f d\f( f)
+a,4\< c c c\!
+d4-.\downbow a4^"r'venu..." c \tempo "T1" e
+@end lilypond
+
+Affected objects include @code{Accidentals}, @code{Beams}, @code{Clefs},
+@code{Dynamics}, @code{FiguredBass}, @code{Flags}, @code{Glissandos},
+@code{Lyrics}, @code{MetronomeMarks}, @code{OttavaBrackets},
+@code{Pedals}, @code{RehearsalMarks}, @code{Rests}, @code{Scripts},
+@code{TextScripts}, @code{Ties}, @code{Tuplets} and @code{VoltaBrackets}.
+
 @item
 Tuplets are now created with the @code{\tuplet} command, which
 takes a fraction @code{@var{t}/@var{n}} to specify that @var{t}
@@ -203,7 +253,7 @@ than@tie{}0.  The byte offset (also part of @code{textedit}
 @acronym{URI}s) still starts at@tie{}0.
 
 @item
-The @code{\clef} command supports optional octavation:
+The @code{\clef} command supports optional transposition:
 @lilypond[verbatim,quote,relative=1]
 \clef "treble_(8)"
 c2 c