diff --git a/vars/local_vars_big.yml b/vars/local_vars_big.yml
index 82ed09cd8..6f839df17 100644
--- a/vars/local_vars_big.yml
+++ b/vars/local_vars_big.yml
@@ -46,8 +46,9 @@ host_wifi_mode: g
 host_channel: 6
 hostapd_secure: False
 hostapd_password: changeme
-wifi_up_down: True    # Creates a second virtual wifi adapter for WiFi upstream to internet
-                      # as well as classroom hotspot, use iiab_gateway_enabled for pass through
+wifi_up_down: True    # Creates a 2nd virtual wifi adapter for upstream WiFi
+# (e.g. to Internet) in addition to downstream WiFi (e.g. classroom hotspot).
+# You can set iiab_gateway_enabled below, to enable "passthrough" to Internet.
 
 # See "How do I set a static IP address?" for Ethernet, in http://FAQ.IIAB.IO
 wan_ip: dhcp       # wan_ip: 192.168.1.99
@@ -71,7 +72,7 @@ ports_externally_visible: 3     # ssh + http-or-https + common IIAB services
 # /opt/iiab/iiab/roles/network/templates/gateway/iiab-gen-iptables
 # And then run: cd /opt/iiab/iiab; ./iiab-network
 
-# Make this True if client machines should have access to WAN/Internet:
+# Set True if client machines should have "passthrough" access to WAN/Internet:
 iiab_gateway_enabled: False
 
 dhcpd_install: False