Followup to 59748, add comment describing option

diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index 1ee9c12..301b97c 100644 (file)
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -776,6 +776,7 @@ $wgParserCacheType = CACHE_ANYTHING;
 
 $wgParserCacheExpireTime = 86400;
 
+// Select which DBA handler <http://www.php.net/manual/en/dba.requirements.php> to use as CACHE_DBA backend
 $wgDBAhandler = 'db3';
 
 $wgSessionsInMemcached = false;