diff --git a/web/gui/src/main/webapp/app/fw/svg/glyph.js b/web/gui/src/main/webapp/app/fw/svg/glyph.js
index f85b697..ca046b5 100644
--- a/web/gui/src/main/webapp/app/fw/svg/glyph.js
+++ b/web/gui/src/main/webapp/app/fw/svg/glyph.js
@@ -203,6 +203,7 @@
         });
     }
 
+    // trans can specify translation [x,y]
     function addGlyph(elem, glyphId, size, overlay, trans) {
         var sz = size || 40,
             ovr = !!overlay,