diff --git a/.gitignore b/.gitignore
index eee426b..1a5478b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -133,3 +133,5 @@ _1623-and-1626-no-schoenberg-hs.svx
 localsettings-oldMuscogee.py
 troggle.sqlite-journal - Shortcut.lnk
 troggle.sqlite - Shortcut.lnk
+q.txt
+t.txt
diff --git a/core/views/other.py b/core/views/other.py
index 167e0b2..0f3a414 100644
--- a/core/views/other.py
+++ b/core/views/other.py
@@ -22,8 +22,6 @@ from .auth import login_required_if_public
 
 '''Utility functions and code to serve the control panel and individual user's 
 progress and task list (deprecated as we do not have individual user login).
-
-Also has code to download a logbook in a choice of formats (why?!) 
 '''
 
 todo = '''
@@ -31,13 +29,13 @@ todo = '''
 - Use logbookdownloader to convert all older logbooks into the 2005-variant of HTML then we can 
     get rid of the parsers for older formats. 
     When we have done all the old logbooks, delete this function and the two templates.
-
-
+    
+    OR invent a new format, e.g. using <article> and <section>?, which is better!
 '''
 
 def todos(request, module): 
     '''produces todo text from module
-    We should automate this to find all those strings automatically
+    We could automate this to find all those strings automatically
     '''
     from troggle.core.TESTS.tests import todo as tests
     from troggle.core.views.logbooks import todo as viewlogbooks
@@ -72,7 +70,7 @@ def troggle404(request): # cannot get this to work. Handler404 in urls.py not ri
     '''
     context = RequestContext(request)
     #context['caves'] = Cave.objects.all()
-    return render(request, ('404.html', context.flatten()))
+    return render(request, ('errors/generic.html', context.flatten()))
 
 def frontpage(request): 
     '''never seen in common practice. Logon should redirect here when this is more useful'''
@@ -91,10 +89,9 @@ def frontpage(request):
 
 @login_required_if_public
 def controlpanel(request):
-    '''This should be re-written to use ajax so that the user can see the progress
-    of the actions.
-    
-    Also need to add reinit_db option
+    '''Admin requires expoadmin user logged on
+    Mostly disabled apart from logbook export
+    DANGEROUS, these import functions kill the ground under your feet !
     '''
     jobs_completed=[]
     
diff --git a/templates/cave.html b/templates/cave.html
index 7cbeef2..e12bdc8 100644
--- a/templates/cave.html
+++ b/templates/cave.html
@@ -517,7 +517,7 @@ div#scene {
 
 {% if cave.survex_file %}
     <h2>Survex File</h2>
-    <p><a href="https://aardgoose.github.io/CaveView.js/">CaveView</a> display of the .3d file is temporarily disabled while we fix things (Nov.2021). See <a href="/handbook/computing/todo.html">/handbook/computing/todo.html</a>.<br>
+    <p><a href="https://aardgoose.github.io/CaveView.js/">CaveView</a> display of the .3d file is temporarily disabled while we fix things (Nov.2021). See <a href="/handbook/computing/todo.rst">/handbook/computing/todo.rst</a>.<br>
     <a href="{% if cave.kataster_number %}{% url "cave3d" cave.kataster_number %}           {% else %}{% url "cave3d" cave.unofficial_number %}           {% endif %}">3d file download</a>&nbsp;for this cave<br>
     <a href="{% if cave.kataster_number %}{% url "survexcavessingle" cave.kataster_number %}{% else %}{% url "survexcavessingle" cave.unofficial_number %}{% endif %}">survex file</a> &nbsp;for this cave