diff --git a/cave_data/1623-204.html b/cave_data/1623-204.html
index 63eefb039..a4120b966 100644
--- a/cave_data/1623-204.html
+++ b/cave_data/1623-204.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
-<!-- This file is generated by troggle on June 7, 2023, 11:15 p.m. UTC using the form documented at /handbook/survey/caveentry.html -->
+<!-- This file is generated by troggle using the form documented at /handbook/survey/caveentry.html -->
 <!-- Only put one cave in this file -->
-<!-- If you edit this 1623-nnn.html file by hand, and manually upload it to the server using git,
+<!-- If you edit this 162x-nnn.html file by hand, and manually upload it to the server using git,
 make sure you update the database by doing a full data import. If you edit it using the online form
 though, you do not need to do a data import as it happens automatically -->
 <!-- ALTERNATIVELY you can download an example template from expoweb/templates/cave_data.html -->
@@ -10,16 +10,16 @@ though, you do not need to do a data import as it happens automatically -->
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
 </head>
 <body>
-<b>This file is generated by troggle</b> on June 7, 2023, 11:15 p.m. UTC using the form documented at
+<b>This file is generated by troggle</b> using the form documented at
 the form documented at 
 <a href="/handbook/survey/caveentry.html">handbook/survey/caveentry.html</a>
 <br>
 
 <cave>
 <non_public>False</non_public><!-- 'False' or 'True'. True if the cave should only be visible to logged-in users. Caves are normally public, so enter 'False' unless you know otherwise. -->
-<caveslug>1623-204</caveslug><!--(Ignored). Internal I.D. formerlly used. Using filename''  -->
+<!--<caveslug></caveslug>--> <!-- Ignored. No longer required, we use the filename instead e.g. 1623-315 for 1623-315.html  -->
 <official_name>Steinbr&uuml;ckenh&ouml;hle</official_name><!-- Name of the cave (normally in German)  Use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
-<area>1623</area><area>2d</area><!-- the CUCC-defined areas shown in http://expo.survex.com/areas.htm -->
+<area>1623</area><!-- e.g. "1623" -->
 <kataster_code>5/S x</kataster_code><!-- 'length-or-depth/type exploration'
 code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast.htm
 
@@ -36,68 +36,65 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
     +   erforscht (exploration considered complete)
  -->
 <kataster_number>204</kataster_number> <!-- (Either this or unofficial_number is required). Official number in Austrian kataster if one has been allocated  -->
-<unofficial_number>CUCC 1999/03</unofficial_number><!-- (Either this or kataster_number is required). Initial temporary cave ID used until kataster number is allocated e.g. '2012-DD-01'-->
+<unofficial_number>CUCC 1999/03</unofficial_number><!-- (This is any name. Either this or kataster_number is required). Initial temporary cave ID used until kataster number is allocated e.g. '2012-DD-01'-->
 
 <entrance>
   <entranceslug>1623-204a</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>a</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>a</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204b</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>b</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>b</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204c</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>c</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>c</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204d</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>d</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>d</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204e</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>e</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>e</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204f</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>f</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>f</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204g</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>g</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>g</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204h</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>h</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>h</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <entrance>
   <entranceslug>1623-204i</entranceslug><!-- Internal ID to refer to each entrance instance in the entrance files (typically the same as that filename (e.g. 1623-161c). Matches the 'slug' field in the entrance file -->
-  <letter>i</letter><!--Leave blank for single-entrance cave. If there is more than one entrace then the letter needs to be given. Generally matches the entranceslug ID.  -->
+  <letter>i</letter><!--Leave blank for single-entrance cave. If there is more than one entrance then the letter needs to be given. Must match the entranceslug ID.  -->
 </entrance>
 
 <explorers></p><ul><li>CUCC 1999 to length 1365m, depth 226m</li><li>CUCC 2000 to 2.5km, depth 368m</li><li>CUCC 2001 to 4.7km, depth 368m</li><li>CUCC 2002 to 5.3km, depth 454m</li><li>CUCC 2003 to 7.2km, depth 510m</li><li>CUCC 2004 to length 9.1km,  depth 542m</li><li>CUCC 2005 to length 11.7km, depth 542m</li></ul><p></explorers><!-- 'CUCC Expo' and year(s) of exploration. To distinguish from caves explored by foreign groups. Individual names can be given too if it was a small cave. -->
-<survex_file>caves-1623/204/204.svx</survex_file><!-- Name of top-level survey file for this cave. Relative to the 'loser' survex repository. So for most caves that's "caves/cavenum/cavnum.svx". (e.g. caves/204/204.svx -->
+<survex_file>caves-1623/204/204.svx</survex_file><!-- Name of top-level survey file for this cave. Relative to the 'loser' survex repository. So for most caves that's "caves-162x/cavenum/cavnum.svx". (e.g. caves-1623/204/204.svx -->
 <underground_description></p><ul><li><a href="/1623/204/entrance.html">Entrance and The Near End passages</a></li><li><a href="/1623/204/midlevel.html">Mid-level passages (including Wolpertinger Way)</a></li><li><a href="/1623/204/ariston.html">Deep routes via the Ariston Series</a></li><li><a href="/1623/204/nopain.html">No Pain No Gain, Pleasuredome, and Millennium Dome / White Elephant area</a></li><li><a href="/1623/204/treeumphant.html">Trunk way through Treeumphant Passage to Cave Tree Chamber and beyond</a></li><li><a href="/1623/204/swings.html">Swings and Roundabouts area</a></li><li><a href="/1623/204/rhino.html">Rhino Rift</a></li><li><a href="uworld.html">The Underworld</a></li><li><a href="/1623/204/convenience.html">Convenience Series</a></li><li><a href="/1623/204/subsoil.html">Subsoil</a></li><li><a href="subway.html">Subway Series</a></li><li style="margin-top: 1em"><a href="/1623/204/atoz.html">Glossary of passage names</a></li><li><a href="/1623/204/gallery.html">Photo gallery</a></li></ul><p></underground_description><!-- Underground description. (description of approach and entrance goes in entrance file). For a small cave this will be the entire description. For larger caves it will be the front page of the description, or a short intro, containing links to other pages with the cave description in, or even nothing but a link. -->
 <equipment></equipment><!-- For a small cave, summary of gear needed to descend. For longer caves it could be blank, a table, or just refer to the description/topos. Leave blank if this info is in the description. -->
 <references></references><!-- References to documentation. Could be Journal articles or Logbook entries. Can be links if the docs are online. -->
 <survey></p> <ul> <li><a href="/expofiles/surveys/204/plan2006.png">Plan, post-2006 Expo</a> [3108k; 6696x12126 pixels, colour] or <a href="/1623/204/surveys/plan2006BW.png">greyscale version</a> [570k; 1410x2554 pixels]</li> <li><a href="/expofiles/surveys/204/plan2005.png">Plan, post-2005 Expo</a> [2696k; 4234x7000 pixels, colour] or <a href="/1623/204/surveys/plan2005.svg.gz">1601k gzipped SVG</a> or <a href="/expofiles/surveys/204/plan2005.pdf">8898k PDF</a></li> <li><a href="/expofiles/surveys/204/plan2004.png">Plan, post-2004 Expo</a> [1497k; 5722x10764 pixels, colour]</li> <li><a href="/1623/204/surveys/plan2003.png">Plan, post-2003 Expo</a> [760k; 3654x5699 pixels, colour]</li> <li><a href="/expofiles/surveys/204/plan2002.png">Plan, post-2002 Expo</a> [702k; approx 2400x3200 pixels, greyscale] or <a href="/1623/204/surveys/plan2002.ps.gz">1.8M gzipped postscript</a></li> <li><a href="/1623/204/surveys/plan2001.png">Plan, post-2001 Expo</a> [511k; approx 2500x3500 pixels, greyscale]</li> <li><a href="/1623/204/surveys/plan2000.png">Plan, post-2000 Expo</a> [79k; approx 2300x3300 pixels, monochrome]</li> <li><a href="/1623/204/surveys/elev2000.png">Elevation, post-2000 Expo</a> [22k; approx 1900x2200 pixels, monochrome]</li> <li><a href="/1623/204/surveys/plan1999.gif">Plan, post-1999 Expo</a> [26k; approx 582x783 pixels, greyscale]</li> <li><a href="/1623/204/surveys/elev1999.gif">Elevation, post-1999 Expo</a> [16k; approx 432x586 pixels, greyscale]</li> </ul><p></survey><!-- Drawn-up surveys. Scans of paper surveys or images/PDFs of electronic surveys. Should include HTML to display current plan and elevation, with links to larger versions (See section on URLs and files). Could list links to multiple years of survey, or even a separate survey page if it's complicated enough. -->
-<kataster_status></kataster_status>
-<underground_centre_line></underground_centre_line><!-- 'In dataset' if it is in the survex dataset. Blank if not, or notes about status such as 'surveyed, but no entrance fix so not yet in dataset'. -->
-<notes></notes><!-- Normally empty, but place for anything else that should be noted, such as info on cave maybe being a duplicate, or lost -->
+<notes></notes><!-- Normally empty, but place for anything else that should be noted, such as info on cave maybe being a duplicate, or lost, and whether a kataster form has been sent to Austria for this cave -->
 <length></length><!-- Cave length. Can be left blank and system should fill it in automatically from survey data (it doesn't yet) -->
 <depth></depth><!--Cave depth. Can be left blank and system should fill it in automatically from survey data (it doesn't yet)  -->
-<extent>approximately N-S</extent>
+<extent></extent>
 
 <description_file></description_file><!-- Path of top-level description file for this cave, when a separate file is used. Otherwise blank. -->
-<url>1623/204/204.html</url><!-- (Required). Relative URL of this cave. i.e the URL this cave appears at on the website, not including 'https://expo.survex.com/. Normally area/cavenum., e.g ('1623/000')-->
 </cave>
 </body>
 </html>
