diff --git a/documentation/poky-ref-manual/ref-classes.xml b/documentation/poky-ref-manual/ref-classes.xml
index 93e9ea8d43..ec1238c5ea 100644
--- a/documentation/poky-ref-manual/ref-classes.xml
+++ b/documentation/poky-ref-manual/ref-classes.xml
@@ -387,8 +387,8 @@
     <para>
         This class adds a step to the package generation process that sanity checks the
         packages generated by the Yocto Project.
-        An ever-increasing range of checks are performed that check for 
-        common problems that break builds.
+        A range of checks are performed that check the build's output
+        for common problems that show up during runtime.
         Distribution policy usually dictates whether to include this class as the Yocto Project does.
     </para>
 </section>
@@ -436,44 +436,72 @@
 </section>
 
 <!-- Undocumented classes are:
-        base_srpm.bbclass
+        allarch.bbclass
+        binconfig.bbclass
         bootimg.bbclass
+        buildstats.bbclass
         ccache.inc
-        ccdv.bbclass
         cmake.bbclass
         cml1.bbclass
         cross.bbclass
-        flow-lossage.bbclass
+        cross-canadian.bbclass
+        deploy.bbclass
+        distrodata.bbclass
         gconf.bbclass
         gettext.bbclass
         gnome.bbclass
+        gtk-doc.bbclass
         gtk-icon-cache.bbclass
         icecc.bbclass
+        image-mklibs.bbclass
+        image-prelink.bbclass
+        image-swab.bbclass
+        imagetest-dummy.bbclass
+        imagetest-qemu.bbclass
+        insserv.bbclass
         lib_package.bbclass
+        license.bbclass
+        logging.bbclass
+        meta.bbclass
+        metadata_scm.bbclass
         mirrors.bbclass
-        mozilla.bbclass
-        multimachine.bbclass
+        multilib*.bbclass
         native.bbclass
+        nativesdk.bbclass
         oelint.bbclass
+        own-mirrors.bbclass
+        packagedata.bbclass
+        packagehistory.bbclass
         patch.bbclass
-        patcher.bbclass
+        perlnative.bbclass
         pkg_distribute.bbclass
         pkg_metainfo.bbclass
-        poky.bbclass
+        populate_sdk*.bbclass
+        prserv.bbclass
+        python-dir.bbclass
+        qemu.bbclass
+        qmake*.bbclass
+        qt4*.bbclass
+        recipe_sanity.bbclass
+        relocatable.bbclass
         rm_work.bbclass
-        rpm_core.bbclass
         scons.bbclass
-        sdk.bbclass
         sdl.bbclass
+        setuptools.bbclass
         sip.bbclass
+        siteconfig.bbclass
         sourcepkg.bbclass
-        srec.bbclass
+        sstate.bbclass
+        staging.bbclass
         syslinux.bbclass
+        task.bbclass
+        terminal.bbclass
         tinderclient.bbclass
-        tmake.bbclass
+        toolchain-scripts.bbclass
+        typecheck.bbclass
+        useradd.bbclass
+        utility-tasks.bbclass
         utils.bbclass
-        xfce.bbclass
-        xlibs.bbclass
 -->