diff --git a/httpd.sysconf b/httpd.sysconf
index dbfa265..1b38411 100644
--- a/httpd.sysconf
+++ b/httpd.sysconf
@@ -1,7 +1,13 @@
 #
-# This file can be used to set additional environment variables
-# for the httpd process, or pass additional options to the httpd
-# executable
+# This file can be used to set additional environment variables for
+# the httpd process, or pass additional options to the httpd
+# executable.
+#
+# Note: With previous versions of httpd, the MPM could be changed by
+# editing an "HTTPD" variable here.  With the current version, that
+# variable is now ignored.  The MPM is a loadable module, and the
+# choice of MPM can be changed by editing the configuration file
+# /etc/httpd/conf.modules.d/00-mpm.conf.
 # 
 
 #
@@ -11,7 +17,9 @@
 #OPTIONS=
 
 #
-# This setting ensures the httpd process is started in the "C" 
-# locale by default:
+# This setting ensures the httpd process is started in the "C" locale
+# by default.  (Some modules will not behave correctly if
+# case-sensitive string comparisons are performed in a different
+# locale.)
 #
 LANG=C