JAL-842 documentation

diff --git a/help/html/menus/popupMenu.html b/help/html/menus/popupMenu.html
index 3537781..8c75586 100755 (executable)
--- a/help/html/menus/popupMenu.html
+++ b/help/html/menus/popupMenu.html
@@ -161,7 +161,8 @@ not be accessible when in 'Cursor Mode' (toggled with the F2 key).</em></p>
         of the methods described above, Jalview will open a 3D interactive 
         view of the file.<br>
         These entries will only be present if the sequence has <a
-                       href="../features/viewingpdbs.html">associated PDB structures</a>.</em><br>
+                       href="../features/viewingpdbs.html">associated PDB structures</a>.<br/>
+                       If the sequence or alignment has RNA structure, then <strong>2D RNA</strong> entries will also be present enabling you to open a linked view of the RNA structure in <a href="../features/varna.html">VARNA</a>.</em><br>
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