diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index 1838114aa..032388990 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -217,10 +217,6 @@ dansguardian_enabled: False
 postgresql_install: False
 postgresql_enabled: False
 
-# Unmaintained
-# authserver_install: False
-# authserver_enabled: False
-
 # Common UNIX Printing System (CUPS)
 cups_install: False
 cups_enabled: False
@@ -470,6 +466,13 @@ minetest_default_game: carbone-ng    # only carbone-ng and minetest are supporte
 minetest_flat_world: False
 
 
+# =============================================================================
+# UNMAINTAINED LEGACY VARIABLES: YOU'RE TAKING BIG RISKS IF YOU USE ANY HERE...
+
+# Unmaintained
+# authserver_install: False
+# authserver_enabled: False
+
 # CONSIDER THESE 2 NEW OPENSTREETMAP (OSM) APPROACHES INSTEAD, AS OF 2018:
 # - http://download.iiab.io/content/OSM/vector-tiles/
 # - http://oer2go.org/viewmod/en-worldmap-10
@@ -534,13 +537,14 @@ minetest_flat_world: False
 # rachel_content_found: False
 # #rachel_url: /rachel
 # rachel_doc_root: "{{ doc_root }}/modules"
+# =============================================================================
 
-# ================================================================
 
-# Platforms - turn all off and let /opt/iiab/iiab/vars/<OS>.yml turn on as appropriate
+# PLATFORMS:
+# TURN ALL OFF AND LET /opt/iiab/iiab/vars/<OS>.yml TURN ON AS APPROPRIATE...
 
 # Wide to narrow (insofar as poss)
-is_debuntu: False    # covers all 3: Ubuntu, Debian, Raspbian
+is_debuntu: False    # Covers all 3: Ubuntu, Debian, Raspbian
 
 is_ubuntu: False
 is_ubuntu_19: False
@@ -548,18 +552,18 @@ is_ubuntu_18: False
 is_ubuntu_17: False
 is_ubuntu_16: False
 
-is_debian: False    # covers both: Debian, Raspbian
+is_debian: False    # Covers both: Debian, Raspbian
 is_debian_10: False
 is_debian_9: False
 is_debian_8: False
 
-is_raspbian: False    # covers RPi HW and non-RPi HW versions of Raspbian
+is_raspbian: False    # Covers RPi HW and non-RPi HW versions of Raspbian
 is_raspbian_10: False
 is_raspbian_9: False
 is_raspbian_8: False
-is_rpi: False    # 2019-03-23 - doesn't yet test for RPi HW, but hopefully soon: https://github.com/iiab/iiab/issues/1406
+is_rpi: False    # 2019-03-23: Doesn't yet test for RPi HW, but hopefully soon: https://github.com/iiab/iiab/issues/1406
 
-is_redhat: False    # not well supported as of 2019, see: https://github.com/iiab/iiab/issues/1434
+is_redhat: False    # Not well supported as of 2019, see: https://github.com/iiab/iiab/issues/1434
 is_centos: False
 is_centos_7: False
 is_fedora: False