Slight modification to the polymetric example.

diff --git a/Documentation/user/advanced-notation.itely b/Documentation/user/advanced-notation.itely
index 1c19f5c0a76f2d028a4bfb6eaed386a17082c530..2c14fd82282979f640439b2fe8aca13c5a1d2793 100644 (file)
--- a/Documentation/user/advanced-notation.itely
+++ b/Documentation/user/advanced-notation.itely
@@ -1713,7 +1713,7 @@ created with a markup text.  This markup text is inserted in the
 tsMarkup =\markup {
   \override #'(baseline-skip . 2) \number {
     \column { "2" "4" }
-    \lower #1 "+"
+    \vcenter "+"
     \bracket \column { "5" "8" }
   }
 }