Link to cave index kataster in newcave instructions

handbook/survey/caveentry.html

@@ -54,6 +54,12 @@ This page outlines step 6 of the survey production process. Each step is documen
     fields filled in. You can then fill out the form for your new cave using that as an example to follow. But of course be
     very careful not to actually chenge anything on the form you have open for editing.
   </p>
+  <h3>New Cave Number</h3>
+  <p>For a totally new cave you will be using a temporary number such as 2017-CUCC-24 or 2018-dm-07, not an Austrian official-issued Kataster number. But you may have been surveying a new passage in an established cave in which case you will need to find out if it has recently been issued with a Kataster number.
+  <p>The list in the "<a href="/caves">Caves</a>" page (the menu item "Caves" in the vertical menu in the top-left of the page you are reading now)
+  shows all the caves which have been already "created" within the online system. You can see a slightly-more updated list in the  
+  <!-- replace this with a link to a page with an IFRAME so that the UTF-8 is done right -->
+  <a href="../../noinfo/cave-number-index">Cave Number Index</a> which includes caves which are in the process of being registered but may not have been "created" using either of the two methods described here.
   <h3>New Cave form</h3>
   <p>The links to follow to open up the "New Cave" form or the "Edit Cave" forms are 
     somewhat obscure. <!--We should change this! -->