Merge r1507326 from trunk:

add a note that proxy environment variables are either set or unset,
unless specific values are listed.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1507329 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/mod_proxy_http.xml b/docs/manual/mod/mod_proxy_http.xml
index 92e16251601acfbbfe8954bac601ab3d044ed47c..44cf03f0f36177302257cf4d6527f4ac57262e6c 100644 (file)
--- a/docs/manual/mod/mod_proxy_http.xml
+++ b/docs/manual/mod/mod_proxy_http.xml
@@ -56,7 +56,8 @@
     <p>In addition to the configuration directives that control the
     behaviour of <module>mod_proxy</module>, there are a number of
     <dfn>environment variables</dfn> that control the HTTP protocol
-    provider:</p>
+    provider. Environment variables below that don't specify specific values
+    are enabled when set to any value.</p>
     <dl>
         <dt>proxy-sendextracrlf</dt>
         <dd>Causes proxy to send an extra CR-LF newline on the end of a