--- a/plugins/mod_pubsub/mod_pubsub.lua	Thu Nov 05 22:27:17 2020 +0100
+++ b/plugins/mod_pubsub/mod_pubsub.lua	Thu Nov 05 22:31:25 2020 +0100
@@ -42,7 +42,7 @@
 
 local node_store = module:open_store(module.name.."_nodes");
 
-local function create_simple_itemstore(node_config, node_name)
+local function create_simple_itemstore(node_config, node_name) --> util.cache like object
 	local driver = storagemanager.get_driver(module.host, "pubsub_data");
 	local archive = driver:open("pubsub_"..node_name, "archive");
 	return lib_pubsub.archive_itemstore(archive, node_config, nil, node_name);
@@ -75,14 +75,13 @@
 	local msg_type = node_obj and node_obj.config.message_type or "headline";
 	local message = st.message({ from = module.host, type = msg_type, id = id })
 		:tag("event", { xmlns = xmlns_pubsub_event })
-			:tag(kind, { node = node })
+			:tag(kind, { node = node });
 
 	if item then
 		message:add_child(item);
 	end
 
 	local summary;
-	-- Compose a sensible textual representation of at least Atom payloads
 	if item and item.tags[1] then
 		local payload = item.tags[1];
 		summary = module:fire_event("pubsub-summary/"..payload.attr.xmlns, {
@@ -101,11 +100,12 @@
 end
 
 local max_max_items = module:get_option_number("pubsub_max_items", 256);
-function check_node_config(node, actor, new_config) -- luacheck: ignore 212/actor 212/node
+function check_node_config(node, actor, new_config) -- luacheck: ignore 212/node 212/actor
 	if (new_config["max_items"] or 1) > max_max_items then
 		return false;
 	end
-	if new_config["access_model"] ~= "whitelist" and new_config["access_model"] ~= "open" then
+	if new_config["access_model"] ~= "whitelist"
+	and new_config["access_model"] ~= "open" then
 		return false;
 	end
 	return true;
@@ -115,6 +115,7 @@
 	return st.is_stanza(item) and item.attr.xmlns == xmlns_pubsub and item.name == "item" and #item.tags == 1;
 end
 
+-- Compose a textual representation of Atom payloads
 module:hook("pubsub-summary/http://www.w3.org/2005/Atom", function (event)
 	local payload = event.payload;
 	local title = payload:get_child_text("title");