Play around with doxygen a bit more, since I don't want to give up on it just yet.

Started 'copying' some comments from the String.cpp file. 

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19642 a95241bf-73f2-0310-859d-f6bbb57e9c96

docs/user/support/support_intro.dox

@@ -5,6 +5,35 @@
 The Support Kit provides a handy set of functions and classes that you can
 use in your applications.
 
-This section is still under construction.
+<ul>
+	<li>Threading utility classes:</li>
+	<ul>
+		<li>BLocker</li>
+		<li>BAutoLock</li>
+		<li>Thread Local Storage</li>
+	</ul>
+	<li>Archiving and IO:</li>
+	<ul>
+		<li>BArchivable</li>
+		<li>BFlattenable</li>
+		<li>BDataIO</li>
+		<ul>
+			<li>BPositionIO</li>
+			<ul>
+				<li>BMemoryIO</li>
+				<li>BMallocIO</li>
+			</ul>
+		</ul>
+	</ul>
+	<li>Container classes:</li>
+	<ul>
+		<li>BBlockCache</li>
+		<li>BList</li>
+		<li>BString</li>
+	</ul>
+	<li>BStopWatch</li>
+	<li>\ref TypeConstants.h "Common types and constants"</li>
+	<li>Error codes for all kits</li>
+</ul>
 */