Issue 4908/7: Add Changes entry for \header expressions

[lilypond.git] / Documentation / changes.tely

diff --git a/Documentation/changes.tely b/Documentation/changes.tely
index fc4052efa6372f1b70ad07faff6b629588a2e885..fb1a77f6331bf83b72dc992a31a1bf3a05c7ecdc 100644 (file)
--- a/Documentation/changes.tely
+++ b/Documentation/changes.tely
@@ -61,6 +61,17 @@ which scares away people.
 
 @end ignore
 
+@item
+Blocks introduced with @code{\header} can be stored in variables
+and used as arguments to music and scheme functions and as the
+body of @code{#@{@dots{}#@}} constructs.  They are represented as
+a Guile module.
+
+While @code{\book}, @code{\bookpart}, @code{\score}, @code{\with},
+@code{\layout}, @code{\midi}, @code{\paper} blocks can be passed
+around in similar manner, they are represented by different data
+types.
+
 @item
 Dot-separated symbol lists like @code{FretBoard.stencil} were
 already supported as of version@tie{}2.18.  They may now also