diff --git a/documentation/adt-manual/adt-prepare.xml b/documentation/adt-manual/adt-prepare.xml
index 686e3e98ea..7fbc8764d5 100644
--- a/documentation/adt-manual/adt-prepare.xml
+++ b/documentation/adt-manual/adt-prepare.xml
@@ -170,13 +170,20 @@
                     </note>
                     </para></listitem>
                     <listitem><para><filename>YOCTOADT_ROOTFS_&lt;arch&gt;</filename> - The root 
-                    filesystem images you want to download.
+                    filesystem images you want to download from the <filename>YOCTOADT_IPKG_REPO</filename>
+                    repository.
                     </para></listitem>
                     <listitem><para><filename>YOCTOADT_TARGET_SYSROOT_IMAGE_&lt;arch&gt;</filename> - The 
-                    root filesystem used to extract and create the target sysroot.
+                    particular root filesystem used to extract and create the target sysroot.
+                    The value of this variable must have been specified with 
+                    <filename>YOCTOADT_ROOTFS_&lt;arch&gt;</filename>.
+                    For example, if you downloaded both <filename>minimal</filename> and 
+                    <filename>sato-sdk</filename> images by setting <filename>YOCTOADT_ROOTFS_&lt;arch&gt;</filename>
+                    to "minimal sato-sdk", then <filename>YOCTOADT_ROOTFS_&lt;arch&gt;</filename>
+                    must be set to either "minimal" or "sato-sdk".
                     </para></listitem>
                     <listitem><para><filename>YOCTOADT_TARGET_SYSROOT_LOC_&lt;arch&gt;</filename> - The 
-                    location of the target sysroot that will be set up on the development machine.
+                    location on the development host where the target sysroot will be created.
                     </para></listitem>
                 </itemizedlist>
             </para>
@@ -222,7 +229,7 @@
         <para>
             If you want to simply install the cross-toolchain by hand you can do so by using an existing 
             cross-toolchain tarball.  
-            If you install the cross-toolchain by hand you will have to set up the sysroot separately.
+            If you install the cross-toolchain by hand you will have to set up the target sysroot separately.
         </para>
 
         <para>