diff --git a/entrance_data/1623-21.html b/entrance_data/1623-21.html
index 76f09d1d1..26ee98037 100644
--- a/entrance_data/1623-21.html
+++ b/entrance_data/1623-21.html
@@ -1,20 +1,30 @@
 <!DOCTYPE html>
 <!-- Only put one entrance in this file -->
-<!-- If you edit this file, make sure you update the websites database -->
+<!-- This file is generated by troggle  using the form documented at handbook/survey/ententry.html -->
+<!-- If you edit this 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 -->
+
+    <!-- See http://expo.survex.com/handbook/survey/caveentryfields.html for current details on filling in this form -->
+    <!-- there is 1 required field: slug. The entrance will not appear without that. -->
+    <!-- ALWAYS use &uuml; for u+Umlaut and &ouml; for o+umlaut eg H&ouml;hle for Hohle and Gl&uuml;ck for Gluck-->
+
 <html lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
 </head>
 <body>
+<b>This file is generated by troggle</b>  using the form documented at 
+<a href="/handbook/survey/ententry.html">handbook/survey/ententry.html</a>
+<br>
 <entrance>
 <non_public>False</non_public>
-
-
-<name></name>
+<slug>1623-21</slug> <!-- one entrance and one slug per entrance_data file -->
+<name>21</name>
 <entrance_description></entrance_description>
 <explorers></explorers>
-<map_description></map_description>
-<location_description>South of Egglgrubenalm (it looks to be east of it on the map), north of <a href="/1623/19/19.htm">Gamsofen</a> (Kat.19).</location_description>
+<location_description>South of Egglgrubenalm (it looks to be east of it on the map), north of <a href="/1623/19/19.html">Gamsofen</a> (Kat.19).</location_description>
+<lastvisit></lastvisit>
 <approach></approach>
 <underground_description></underground_description>
 <photo></photo>
@@ -27,7 +37,7 @@
                       S? = Spit (?),
                       U  = Unmarked,
                       ?  = Unknown" -->
-<marking></marking> 
+<marking>P</marking> 
 <marking_comment></marking_comment>
 <!-- findability options: ? = To be confirmed ...,
                           S = Surveyed,
@@ -36,14 +46,12 @@
 <findability>L</findability>
 <findability_description></findability_description>
 <alt>1510m</alt>
-<northing></northing>
-<easting></easting> 
+<lat_wgs84></lat_wgs84> 
+<long_wgs84></long_wgs84> 
 <tag_station></tag_station>
-<exact_station></exact_station>
 <other_station></other_station>
 <other_description></other_description>
-<bearings></bearings>
-<url></url>
+<bearings></bearings> <!-- this is now read-only and not editable on the forms-->
 </entrance>
 </body>
 </html>
