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diff --git a/NEWS.txt b/NEWS.txt
index 0aac6fc370..ac7ad1d469 100644
--- a/NEWS.txt
+++ b/NEWS.txt
@@ -1,6 +1,13 @@
 New features in 2.20 since 2.18
 *******************************
 
+   • A new ‘output-attributes’ grob property is now used for svg output
+     instead of the ‘id’ grob property.  It allows multiple attributes
+     to be defined as an association list.  For example, ‘#'((id . 123)
+     (class . foo) (data-whatever . “bar”))’ will produce the following
+     group tag in an SVG file: ‘<g id=“123” class=“foo”
+     data-whatever=“bar”> ... </g>’.
+
    • Slurs and phrasing slurs may now be started from individual notes
      in a chord.  Several simultanous slurs per ‘Voice’ need to be
      distinguished by ‘spanner-id’ setting.