--- a/svghmi/gen_index_xhtml.ysl2	Sun Feb 21 21:38:44 2021 +0100
+++ b/svghmi/gen_index_xhtml.ysl2	Mon Feb 22 10:08:36 2021 +0100
@@ -7,11 +7,13 @@
 decl emit(*name) alias - {
     *name;
     template *name {
+        const "_unused", "ns:ProgressStart(name())";
         |
         | /* «local-name()» */
         |
         content;
         |
+        const "__unused", "ns:ProgressEnd(name())";
     }
 };