diff --git a/backend/src/ron_extractor.rs b/backend/src/ron_extractor.rs
index 1c14869..bdd6655 100644
--- a/backend/src/ron_extractor.rs
+++ b/backend/src/ron_extractor.rs
@@ -1,3 +1,4 @@
+//! An Axum extractor for HTTP body containing RON data (Rusty Object Notation).
 use axum::{
     body::Bytes,
     extract::{FromRequest, Request},
diff --git a/backend/templates/title.html b/backend/templates/title.html
index 57730e4..67ec663 100644
--- a/backend/templates/title.html
+++ b/backend/templates/title.html
@@ -1,4 +1,8 @@
 <a class="title" href="/{{ context.tr.current_lang_code() }}/"><img class="logo" src="
+    {#
+        It should be better to put the image link into the CSS file
+        (in case of CSS dynamic swap for instance)
+    #}
     {% if context.dark_theme %}
         /static/logo_dark.svg
     {% else %}