diff --git a/documentation/ref-manual/usingpoky.xml b/documentation/ref-manual/usingpoky.xml
index ca87962e24..223d4cfe48 100644
--- a/documentation/ref-manual/usingpoky.xml
+++ b/documentation/ref-manual/usingpoky.xml
@@ -799,6 +799,11 @@
 
         <section id='build-history-sdk-information'>
             <title>Build History SDK Information</title>
+
+The files that get copied in are controlled by the BUILDHISTORY_SDK_FILES  variable.  Default is to copy the local.conf, bblayers.conf, auto.conf, lockdef.inc, devtool.conf.  There is a "conf" directory under "sdk" that has these files.
+
+
+
             <para>
                 Build history collects similar information on the contents
                 of SDKs (e.g. <filename>meta-toolchain</filename>
@@ -817,6 +822,28 @@
                         about the SDK.
                         See the following listing example for more information.
                         </para></listitem>
+                    <listitem><para><filename>sstate-task-sizes:</filename>
+                        A folder containing files that show the sizes of task
+                        groups (e.g. <filename>do_sysroot</filename> tasks has
+                        a total size).
+                        </para></listitem>
+                    <listitem><para><filename>sstate-package-sizes:</filename>
+                        A folder containing files that show the shared-state
+                        packages in the SDK.
+                        </para></listitem>
+                    <listitem><para><filename>conf:</filename>
+                        A folder containing the
+                        <filename>local.conf</filename>,
+                        <filename>bblayers.conf</filename>,
+                        <filename>auto.conf</filename>,
+                        <filename>lockdef.inc</filename>, and
+                        <filename>devtool.conf</filename> files.
+                        By default, these files get copied into the
+                        <filename>sdk</filename> directory.
+                        You can control the files that get copied into this
+                        directory by setting the
+                        <filename>BUILDHISTORY_SDK_FILES</filename> variable.
+                        </para></listitem>
                     <listitem><para>The following information appears under
                         each of the <filename>host</filename>
                         and <filename>target</filename> directories