diff --git a/core/forms.py b/core/forms.py
index 23b80ce..ede7d9e 100644
--- a/core/forms.py
+++ b/core/forms.py
@@ -16,7 +16,13 @@ import re
 There are other, simpler, upload forms in view/uploads.py
 
 class-based forms are quicker to set up (for Django experts) but
-are more difficult to maintain by non-Django experts.
+are more difficult to maintain (or even begin to understand) by non-Django experts.
+
+Notes to self, as I try to work out what the hell is going on:
+
+Note that HTMLarea invokes a widget which sets a CSS class which calls javascript in 
+templates/html_editor_scripts_css.html - which imports jquery and codemirror directly, without
+declaring it anywhere or locally installing it. (!)
 """
 
 todo = """
@@ -88,12 +94,6 @@ class CaveForm(ModelForm):
 	# Converting a PENDING cave to a real cave by saving this form
         print("EEE", cave_slug.replace("-PENDING-", "-"))
         return cave_slug.replace("-PENDING-", "-")
-        
-#    def clean_url(self):
-#        data = self.cleaned_data["url"] 
-#        if not re.match("\d\d\d\d/.", data):
-#            raise ValidationError("URL must start with a four digit Kataster area.")
-#        return data
             
     
     def clean(self):
diff --git a/core/views/editor_helpers.py b/core/views/editor_helpers.py
index 91ba01e..0c3f5b6 100644
--- a/core/views/editor_helpers.py
+++ b/core/views/editor_helpers.py
@@ -22,9 +22,15 @@ MAX_IMAGE_HEIGHT = 800
 THUMBNAIL_WIDTH = 200
 THUMBNAIL_HEIGHT = 200
 
+"""This is all written by Martin Green, and completely undocumented.
+
+It uses a lot of opinionated Django default magic, none of which I am familiar with.
+Philip
+"""
 
 def get_dir(path):
     "From a path sent from urls.py, determine the directory."
+    # todo re-write this to use modern pathlib functions
     if "/" in path:
         return path.rsplit("/", 1)[0]
     else:
@@ -34,6 +40,7 @@ def get_dir(path):
 def image_selector(request, path):
     """Returns available images"""
     directory = get_dir(path)
+    print(f" - image selector {directory=} {path=}")
     thumbnailspath = Path(settings.EXPOWEB) / directory / "t"
     thumbnails = []
     if thumbnailspath.is_dir():
@@ -116,7 +123,7 @@ def new_image_form(request, path):
             thumbnail = thumbnail.convert('RGB')
             thumbnail.save(tb, format="jpeg", quality = 70)
             image_rel_path, thumb_rel_path, desc_rel_path = form.get_rel_paths()
-            image_page_template = loader.get_template("image_page_template.html")
+            image_page_template = loader.get_template("image_page_template.html") # this is the .html file in the /l/ folder
             image_page = image_page_template.render(
                 {
                     "header": form.cleaned_data["header"],
@@ -190,7 +197,7 @@ class NewWebImageForm(forms.Form):
         ]
 
     def get_full_paths(self):
-        return [Path(settings.EXPOWEB) / x for x in self.get_rel_paths()]
+        return [Path(settings.EXPOWEB) / x for x in self.get_rel_paths()] # this is where we would want to insert the /caveid/ ?!
 
     def clean_file_(self):
         for rel_path, full_path in zip(self.get_rel_paths(), self.get_full_paths()):
@@ -200,6 +207,9 @@ class NewWebImageForm(forms.Form):
 
 
 class HTMLarea(forms.Textarea):
+    """This is called from CaveForm in core/forms.py which is called from core/views/caves.py when editing a cave description
+    (and similarly for Entrance Descriptions). It is alls called from core/views/expo.py when editing expo (i.e. handbook) pages.
+    """
     template_name = "widgets/HTMLarea.html"
 
     def __init__(self, *args, **kwargs):