updated the docs

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402863

docs/docs/intro.xml

@@ -312,13 +312,14 @@
         <a href="containers.html#queue">here</a>.
         </p>
         <p>
-        None of the above applies to the API components (or any global functions or objects that don't list multiple implementations
-        in their documentation).  To use/create them you just need to include
+        None of the above applies to the API components (or any global functions or objects that don't have an "implementations"
+        section in their documentation).  To use/create them you just need to include
         the appropriate headers.  For example, to create a mutex object from the <a href="api.html#threads">
         threads</a> component you would simply type <tt>dlib::mutex my_mutex;</tt>.  There is no 
         need to specify which kernel implementation.  The correct kernel implementation 
         is determined by which platform you compile under.  There are also no explicit checking versions
-        of the API components.  However, there are <a href="metaprogramming.html#DLIB_ASSERT">DLIB_ASSERT</a> statements that perform checking and you can 
+        of these components.  However, there are 
+        <a href="metaprogramming.html#DLIB_ASSERT">DLIB_ASSERT</a> statements that perform checking and you can 
         enable them by #defining DEBUG or ENABLE_ASSERTS. 
         </p>