+The following syntax changes were made, in chronological order. In
+addition, fret diagram properties have been moved to
+@code{fret-diagram-details}, and the @code{#'style} property is
+used to select solid/dashed lines instead of @code{#'dash-fraction}.
+
+@example
+'break-align-symbol -> 'break-align-symbols
+scripts.caesura -> scripts.caesura.curved
+\setEasyHeads -> \easyHeadsOn
+\easyHeadsOff (new command)
+\fatText -> \textLengthOn
+\emptyText -> \textLengthOff
+\set hairpinToBarline -> \override Hairpin #'to-barline
+\compressMusic -> \scaleDurations
+\octave -> \octaveCheck
+\arpeggioUp -> \arpeggioArrowUp
+\arpeggioDown -> \arpeggioArrowDown
+\arpeggioNeutral -> \arpeggioNormal
+\setTextCresc -> \crescTextCresc
+\setTextDecresc -> \dimTextDecresc
+\setTextDecr -> \dimTextDecr
+\setTextDim -> \dimTextDim
+\setHairpinCresc -> \crescHairpin
+\setHairpinDecresc -> \dimHairpin
+\sustainUp -> \sustainOff
+\sustainDown -> \sustainOn
+\sostenutoDown -> \sostenutoOn
+\sostenutoUp -> \sostenutoOff
+'infinite-spacing-height -> 'extra-spacing-height
+#(set-octavation oct) -> \ottava #oct
+\put-adjacent markup axis dir markup -> \put-adjacent axis dir markup markup
+\pointAndClickOn (new command)
+\pointAndClickOff (new command)
+\center-align -> \center-column
+\hcenter -> \center-align
+printallheaders -> print-all-headers
+\bigger -> \larger (already existing command)
+@end example
+
+@noindent
+Moreover, some files in the @code{ly/} directory have been renamed;
+the *-init.ly filenames are now only used for files that are automatically
+included, while such files as @code{makam-init.ly} or @code{gregorian-init.ly}
+have been renamed to @code{makam.ly} or @code{gregorian.ly}.
+
+@item
+Metronome marks can now also contain a textual description. The
+duration and count (if given) are shown in parentheses after the text.
+
+@lilypond[]
+{
+ \tempo "Fast"
+ c'4 c' c' c'
+ c'4 c' c' c'
+ \tempo "Andante" 4 = 120
+ c'4 c' c' c'
+ c'4 c' c' c'
+ \tempo 4 = 100
+ c'4 c' c' c'
+ c'4 c' c' c'
+ \tempo "" 4 = 30
+ c'4 c' c' c'
+ c'4 c' c' c'
+}
+@end lilypond