+@item Alterations (such as a sharp and flat) may now be arbitrary
+fractions. This allows some forms of microtonal music. For example,
+Turkish makam music uses 1/9th tone alterations.
+
+@lilypondfile{makam.ly}
+
+
+
+@item Tie directions may be set with @code{^~} and @code{_~}
+
+@item Tablature now supports harmonics and slides,
+
+@lilypond[fragment,ragged-right,relative=1]
+\new TabVoice
+{
+ <c g'\harmonic> d\2\glissando e\2
+}
+@end lilypond
+
+This feature was sponsored by Mike Amundsen
+
+@item Horizontal spacing now follows object outlines more
+accurately. This allows tighter horizontal spacing.
+
+@lilypond[fragment,ragged-right]
+{
+ \stemUp c''4...*1/2
+ ceses'!
+}
+@end lilypond
+
+
+@item Objects that belong outside of the staff are
+now positioned automatically to avoid collisions.
+
+@lilypond[fragment,ragged-right,relative=1]
+ c''
+ \once \override TextScript #'self-alignment-X = #CENTER
+ a,^"this doesn't collide with the c"
+ b^"this goes above the previous markup"
+ a8_"this goes below the dynamic"
+ a\f
+@end lilypond
+
+@item Staves are spaced vertically using a skyline algorithm. This helps to avoid
+uneven vertical spacing.
+
+@lilypond[ragged-right]
+
+%% todo: fix 'landscape PDF.
+#(set-default-paper-size "a6" )
+\header {
+ tagline = ##f
+}
+
+\book {
+ \score {
+ {
+ a,,1 | a'4 b' c'' d'' \break
+ \repeat unfold 2 {a' b' c'' d''} | b''''1
+ }
+ }
+}
+@end lilypond
+