--- a/svghmi/widgets_common.ysl2	Wed Mar 18 09:16:14 2020 +0100
+++ b/svghmi/widgets_common.ysl2	Wed Mar 18 09:37:26 2020 +0100
@@ -1,3 +1,5 @@
+// widgets_common.ysl2
+
 in xsl decl labels(*ptr, name="defs_by_labels") alias call-template {
     with "hmi_element", "$hmi_element";
     with "labels"{text *ptr};