diff --git a/.envrc.sample b/.envrc.sample
index d415708..92cef82 100644
--- a/.envrc.sample
+++ b/.envrc.sample
@@ -1,6 +1,8 @@
-export DOMAIN=wiki.example.com
 export STACK_NAME=example_wiki
 
+export DOMAIN=wiki.example.com
+## Domain aliases
+#export EXTRA_DOMAINS=', `www.wiki.example.com`'
 export LETS_ENCRYPT_ENV=production
 
 export MEDIAWIKI_SITENAME="Example Wiki"