document implicit limitation in AllowOverride Option=Foo -- this doesn't let you

"lock in" any value since the non +/- syntax can zap whatever it wants.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1154940 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/core.xml b/docs/manual/mod/core.xml
index 95f636bb070374a8be90315175402b48d7aee991..eb0ffd9a73496107ae9a7760544d34f9b1e31725 100644 (file)
--- a/docs/manual/mod/core.xml
+++ b/docs/manual/mod/core.xml
@@ -421,7 +421,17 @@ NoDecode option available in 2.3.12 and later.</compatibility>
       <directive module="mod_include">XBitHack</directive>).
       An equal sign may be given followed by a comma (but no spaces)
       separated lists of options that may be set using the <directive
-      module="core">Options</directive> command.</dd>
+      module="core">Options</directive> command.
+
+      <note><title>Implicit disabling of Options</title>
+      <p>Even though the list of options that may be used in .htaccess files 
+         can be limited with this directive, as long as any <directive 
+         module="core">Options</directive> directive is allowed any
+         other inherited option can be disabled by using the non-relative
+         syntax.  In other words, this mechanism cannot force a specific option
+         to remain <em>set</em> while allowing any others to be set.
+      </p></note>
+      </dd>
     </dl>
 
     <p>Example:</p>