diff --git a/modules/journalwatch.nix b/modules/journalwatch.nix
index 1518579..0d5b777 100644
--- a/modules/journalwatch.nix
+++ b/modules/journalwatch.nix
@@ -1,6 +1,12 @@
 { config, pkgs, ... }:
 
 {
+  # Systemd Journal Monitoring.
+  # Alternative:
+  #   journal-biref
+  #     https://github.com/twaugh/journal-brief
+  #     https://opensource.com/article/20/7/systemd-journals-email
+
   # Write to Systemd Journal:
   #   echo 'hello' | systemd-cat -p emerg
   #   echo 'hello' | systemd-cat -t someapp -p emerg