Add Changes entries for \absolute and \relative { ... }

diff --git a/Documentation/changes.tely b/Documentation/changes.tely
index ac4f8d88146d58837c33e0274a240116b8770f26..951dabd22bf86dbba406bf8e05e3fe5f7c6d9f19 100644 (file)
--- a/Documentation/changes.tely
+++ b/Documentation/changes.tely
@@ -61,6 +61,14 @@ which scares away people.
 
 @end ignore
 
+@item
+When @code{\relative} is used without an explicit reference pitch,
+the reference pitch now is the middle of the first octave, making
+the first entered pitch indistinguishable from absolute pitch.
+Previously, omitting the reference pitch would have lead to a
+default of @code{c'}.  Since that choice was somewhat arbitrary,
+recommended usage was to always specify the reference pitch.
+
 @item
 A new command @code{\single} can be used for converting a property
 override into a tweak to be applied on a single music expression: