Issue 4296: Let \displayLilyMusic print even repeated durations

[lilypond.git] / Documentation / extending / scheme-tutorial.itely

diff --git a/Documentation/extending/scheme-tutorial.itely b/Documentation/extending/scheme-tutorial.itely
index 7503306b1fa56f3e8c16b0f6d25b5f5e8d8f28a6..a399570dec32412e13b77457a294999e9af1ee94 100644 (file)
--- a/Documentation/extending/scheme-tutorial.itely
+++ b/Documentation/extending/scheme-tutorial.itely
@@ -275,9 +275,10 @@ Abelson, see
 @node Lists
 @unnumberedsubsubsec Lists
 
-A very common Scheme data structure is the @emph{list}.  Formally, a
-list is defined as either the empty list (represented as @code{'()},
-or a pair whose @code{cdr} is a list.
+A very common Scheme data structure is the @emph{list}.  Formally,
+a @q{proper} list is defined to be either the empty list with its
+input form @code{'()} and length@tie{}0, or a pair whose
+@code{cdr} in turn is a shorter list.
 
 There are many ways of creating lists.  Perhaps the most common is
 with the @code{list} procedure:
@@ -1263,7 +1264,7 @@ The note pitch can be changed by setting this @code{'pitch} property,
        (ly:make-pitch 0 1 0)) ;; set the pitch to d'.
 \displayLilyMusic \someNote
 ===>
-d'
+d'4
 @end example