PRR fixes

Author: Chris Cho

source/style-guide/markup/directives/metadata.txt

@@ -7,10 +7,13 @@ Page Metadata Directives
 meta
 ----
 
-Use ``.. meta::`` to add |html| meta tags to a page. Adding meta tags
-aids in searches both internally and through the Internet. You can add
-both keywords and descriptions. To learn more, see
-:ref:`seo-guidelines`.
+Use ``.. meta::`` to add |html| ``<meta>`` tags to a page. These tags are not
+provide other systems such as web browsers, search engines, and other web 
+services, with information about the page.
+
+You can specify the ``keywords`` and ``description`` name attributes, which
+can help indexing pages on internal and external search engines. To learn
+more about how to use these name attributes, see :ref:`seo-guidelines`.
 
 .. important::