diff --git a/yocto-poky/documentation/ref-manual/ref-tasks.xml b/yocto-poky/documentation/ref-manual/ref-tasks.xml
index 21403c0..c46debb 100644
--- a/yocto-poky/documentation/ref-manual/ref-tasks.xml
+++ b/yocto-poky/documentation/ref-manual/ref-tasks.xml
@@ -31,6 +31,36 @@
         </para>
     </section>
 
+    <section id='ref-tasks-checkpkg'>
+        <title><filename>do_checkpkg</filename></title>
+
+        <para>
+            Provides information about the recipe including its upstream
+            version and status.
+            The upstream version and status reveals whether or not a version
+            of the recipe exists upstream and a status of not updated, updated,
+            or unknown.
+        </para>
+
+        <para>
+            The <filename>checkpkg</filename> task is included as part of the
+            <link linkend='ref-classes-distrodata'><filename>distrodata</filename></link>
+            class.
+        </para>
+
+        <para>
+            To build the <filename>checkpkg</filename> task, use the
+            <filename>bitbake</filename> command with the "-c" option and
+            task name:
+            <literallayout class='monospaced'>
+     $ bitbake core-image-minimal -c checkpkg
+            </literallayout>
+            By default, the results are stored in
+            <link linkend='var-LOG_DIR'><filename>$LOG_DIR</filename></link>
+            (e.g. <filename>$BUILD_DIR/tmp/log</filename>).
+        </para>
+    </section>
+
     <section id='ref-tasks-compile'>
         <title><filename>do_compile</filename></title>
 
@@ -87,6 +117,32 @@
         </para>
     </section>
 
+    <section id='ref-tasks-distrodata'>
+        <title><filename>do_distrodata</filename></title>
+
+        <para>
+            Provides information about the recipe.
+        </para>
+
+        <para>
+            The <filename>distrodata</filename> task is included as part of the
+            <link linkend='ref-classes-distrodata'><filename>distrodata</filename></link>
+            class.
+        </para>
+
+        <para>
+            To build the <filename>distrodata</filename> task, use the
+            <filename>bitbake</filename> command with the "-c" option and
+            task name:
+            <literallayout class='monospaced'>
+     $ bitbake core-image-minimal -c distrodata
+            </literallayout>
+            By default, the results are stored in
+            <link linkend='var-LOG_DIR'><filename>$LOG_DIR</filename></link>
+            (e.g. <filename>$BUILD_DIR/tmp/log</filename>).
+        </para>
+    </section>
+
     <section id='ref-tasks-fetch'>
         <title><filename>do_fetch</filename></title>
 
@@ -99,6 +155,60 @@
         </para>
     </section>
 
+    <section id='ref-tasks-image'>
+        <title><filename>do_image</filename></title>
+
+        <para>
+            Starts the image generation process.
+            The <filename>do_image</filename> task runs after the
+            OpenEmbedded build system has run the
+            <link linkend='ref-tasks-rootfs'><filename>do_rootfs</filename></link>
+            task during which packages are identified for installation into
+            the image and the root filesystem is created, complete with
+            post-processing.
+        </para>
+
+        <para>
+            The <filename>do_image</filename> task performs pre-processing
+            on the image through the
+            <link linkend='var-IMAGE_PREPROCESS_COMMAND'><filename>IMAGE_PREPROCESS_COMMAND</filename></link>
+            and dynamically generates supporting
+            <filename>do_image_*</filename> tasks as needed.
+        </para>
+
+        <para>
+            For more information on image creation, see the
+            "<link linkend='image-generation-dev-environment'>Image Generation</link>"
+            section.
+        </para>
+    </section>
+
+    <section id='ref-tasks-image-complete'>
+        <title><filename>do_image_complete</filename></title>
+
+        <para>
+            Completes the image generation process.
+            The <filename>do_image_complete</filename> task runs after the
+            OpenEmbedded build system has run the
+            <link linkend='ref-tasks-rootfs'><filename>do_image</filename></link>
+            task during which image pre-processing occurs and through
+            dynamically generated <filename>do_image_*</filename> tasks the
+            image is constructed.
+        </para>
+
+        <para>
+            The <filename>do_image_complete</filename> task performs
+            post-processing on the image through the
+            <link linkend='var-IMAGE_POSTPROCESS_COMMAND'><filename>IMAGE_POSTPROCESS_COMMAND</filename></link>.
+        </para>
+
+        <para>
+            For more information on image creation, see the
+            "<link linkend='image-generation-dev-environment'>Image Generation</link>"
+            section.
+        </para>
+    </section>
+
     <section id='ref-tasks-install'>
         <title><filename>do_install</filename></title>
 
@@ -239,10 +349,16 @@
         <title><filename>do_populate_sysroot</filename></title>
 
         <para>
-            Copies a subset of files installed by the
+            Copies a subset of the files installed by the
             <link linkend='ref-tasks-install'><filename>do_install</filename></link>
-            task into the sysroot in order to make them available to other
-            recipes.
+            task into the sysroot to make them available to other recipes.
+            Files that would typically not be needed by other recipes at build
+            time are skipped.
+            Skipped files include files installed into
+            <filename>/etc.</filename>
+            For information on what files are copied, see the
+            <link linkend='ref-classes-staging'><filename>staging</filename></link>
+            class.
         </para>
 
         <para>
@@ -700,15 +816,6 @@
         The following sections describe miscellaneous tasks.
     </para>
 
-    <section id='ref-tasks-generate_qt_config_file'>
-        <title><filename>do_generate_qt_config_file</filename></title>
-
-        <para>
-            Writes a <filename>qt.conf</filename> configuration
-            file used for building a Qt-based application.
-        </para>
-    </section>
-
     <section id='ref-tasks-spdx'>
         <title><filename>do_spdx</filename></title>