diff --git a/src/compatibility/contact-us.jd b/src/compatibility/contact-us.jd
index 3c9418c..72999e6 100644
--- a/src/compatibility/contact-us.jd
+++ b/src/compatibility/contact-us.jd
@@ -21,19 +21,20 @@
 <p>If you have questions about Android compatibility that aren't covered in
 this site, you can reach us in one of a few different ways. To get the most
 out of any of these options, please first read "Getting the Most from Our
-Lists" on the <a href="index.html">Community page</a></p>
-<h2 id="for-general-discussion">For General Discussion</h2>
-<p>The preferred way to reach us is via the <a href="mailto:compatibility@android.com">compatibility@android.com</a> address.</p>
-<h2 id="for-cts-technical-questions">For CTS Technical Questions</h2>
-<p>If you have specific issues with the Compatibility Test Suite that require
-you to disclose information you'd prefer not to be public, you can contact an
-email address we've set up specifically this purpose: <a href="mailto:cts@android.com">cts@android.com</a>. This email address is for
-cases that require disclosure of confidential information only, so general
-questions will be directed back to the public android-compatibility
-list. Note also that this list is for specific technical questions; general
-inquiries will also be directed back to the <a href="https://groups.google.com/forum/?fromgroups#!forum/android-compatibility">android-compatibility list.</a></p>
+Lists" on the <a href="{/community/index.html">Community page</a></p>
+<h2 id="for-android-compatibility-definition-and-compatibility-test-suite-technical-questions">For Android Compatibility Definition and Compatibility Test Suite Technical Questions</h2>
+<p>If you have questions about Android compatibility that aren't covered in this site, you can reach
+us in one of a few different ways. To get the most out of any of these options, please first read "Getting the Most from Our
+Lists" on the <a href="/community/index.html">Community page</a>. If you have specific issues with the Compatibility Test Suite or the Compatibility Definition
+<a href="https://groups.google.com/forum/?fromgroups#!forum/android-compatibility">android-compatibility list.</a> is the discussion forum for you.</p>
+<ul>
+<li>Subscribe using Google Groups: <a href="https://groups.google.com/forum/?fromgroups#!forum/android-compatibility">android-compatibility</a></li>
+<li>Subscribe via email: <a href="mailto:android-compatibility+subscribe@googlegroups.com">android-compatibility</a></li>
+</ul>
+<p>Note that if you're a user looking for help with your Android device, this page probably isn't for you;
+you should contact your carrier or manufacturer for help with your Android device.</p>
 <h2 id="for-business-inquiries">For Business Inquiries</h2>
 <p>Finally, business inquiries about the compatibility program, including
 requests to use branding elements and so on, can be sent to the address <a href="mailto:android-partnerships@google.com">android-partnerships@google.com</a>. Like
 the CTS address, this address is for specific, private inquiries; general
-questions will be directed back to the android-compatibility list.</p>
+questions will be directed back to the android-compatibility list.</p>
\ No newline at end of file
diff --git a/src/compatibility/downloads.jd b/src/compatibility/downloads.jd
index 1e5c3e6..7cbf466 100644
--- a/src/compatibility/downloads.jd
+++ b/src/compatibility/downloads.jd
@@ -19,14 +19,17 @@
 
 <p>Thanks for your interest in Android Compatibility! The links below allow
 you to access the key documents and information.</p>
+<p>Thanks for your interest in Android Compatibility! The links below allow
+you to access the key documents and information.</p>
+
 <h2 id="android-42">Android 4.2</h2>
 <p>Android 4.2 is the release of the development milestone code-named
 Jelly Bean-MR1. Android 4.2 is the current version of Android. Source code for
-Android 4.2 is found in the 'android-4.2_r1' branch in the open-source tree.</p>
+Android 4.2 is found in the 'android-4.2.2_r1' branch in the open-source tree.</p>
 <ul>
 <li><a href="4.2/android-4.2-cdd.pdf">Android 4.2 Compatibility Definition Document (CDD)</a></li>
-<li><a href="https://dl.google.com/dl/android/cts/android-cts-4.2_r1-linux_x86-arm.zip">Android 4.2 R1 Compatibility Test Suite (CTS)</a></li>
-<li><a href="https://dl.google.com/dl/android/cts/android-cts-verifier-4.2_r1-linux_x86-arm.zip">Android 4.2 R1 CTS Verifier</a></li>
+<li><a href="https://dl.google.com/dl/android/cts/android-cts-4.2_r4-linux_x86-arm.zip">Android 4.2 R4 Compatibility Test Suite (CTS)</a></li>
+<li><a href="https://dl.google.com/dl/android/cts/android-cts-verifier-4.2_r5-linux_x86-arm.zip">Android 4.2 R5 CTS Verifier</a></li>
 </ul>
 <h2 id="android-41">Android 4.1</h2>
 <p>Android 4.1.1 is the release of the development milestone code-named
@@ -34,8 +37,8 @@
 Android 4.1.1 is found in the 'android-4.1.1_r1' branch in the open-source tree.</p>
 <ul>
 <li><a href="4.1/android-4.1-cdd.pdf">Android 4.1 Compatibility Definition Document (CDD)</a></li>
-<li><a href="https://dl.google.com/dl/android/cts/android-cts-4.1_r1-linux_x86-arm.zip">Android 4.1 R1 Compatibility Test Suite (CTS)</a></li>
-<li><a href="https://dl.google.com/dl/android/cts/android-cts-verifier-4.1_r2-linux_x86-arm.zip">Android 4.1 R2 CTS Verifier</a></li>
+<li><a href="https://dl.google.com/dl/android/cts/android-cts-4.1_r3-linux_x86-arm.zip">Android 4.1 R3 Compatibility Test Suite (CTS)</a></li>
+<li><a href="https://dl.google.com/dl/android/cts/android-cts-verifier-4.1_r6-linux_x86-arm.zip">Android 4.1 R6 CTS Verifier</a></li>
 </ul>
 <h2 id="android-403">Android 4.0.3</h2>
 <p>Android 4.0.3 is the release of the development milestone code-named
@@ -94,4 +97,4 @@
 <h2 id="older-android-versions">Older Android Versions</h2>
 <p>There is no Compatibility Program for older versions of Android, such as Android
 1.5 (known in development as Cupcake). New devices intended to be Android
-compatible must ship with Android 1.6 or later.</p>
+compatible must ship with Android 1.6 or later.</p>
\ No newline at end of file
diff --git a/src/devices/tech/input/key-layout-files.jd b/src/devices/tech/input/key-layout-files.jd
index d416341..63fbcac 100644
--- a/src/devices/tech/input/key-layout-files.jd
+++ b/src/devices/tech/input/key-layout-files.jd
@@ -52,10 +52,16 @@
 and flags.</p>
 <h3 id="key-declarations">Key Declarations</h3>
 <p>Key declarations each consist of the keyword <code>key</code> followed by a Linux key code
-number, an Android key code name, and optional set of whitespace delimited policy flags.</p>
-<pre><code>key 1     ESCAPE
+number and an Android key code name, or the keyword `usage` followed by a HID
+usage and an Android key code name. The HID usage is represented as a 32-bit
+integer, where the high 16-bits represent the HID usage page and the low
+16-bits represent the HID usage ID. Either of these declarations can then be
+followed by an optional set of whitespace delimited policy flags.</p>
+<pre><code>
+key 1     ESCAPE
 key 114   VOLUME_DOWN       WAKE
 key 16    Q                 VIRTUAL     WAKE
+key usage 0x0c006F          BRIGHTNESS_UP
 </code></pre>
 <p>The following policy flags are recognized:</p>
 <ul>
diff --git a/src/source/build-numbers.jd b/src/source/build-numbers.jd
index c9b6607..cf33d51 100644
--- a/src/source/build-numbers.jd
+++ b/src/source/build-numbers.jd
@@ -421,15 +421,35 @@
 <td>android-4.2_r1</td>
 <td>Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10</td>
 </tr>
+
 <tr>
 <td>JOP40D</td>
 <td>android-4.2.1_r1</td>
+<td>Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10</td>
+</tr>
+
+<tr>
+<td>JOP40F</td>
+<td>android-4.2.1_r1.1</td>
+<td>Nexus 10</td>
+</tr>
+
+<tr>
+<td>JOP40G</td>
+<td>android-4.2.1_r1.2</td>
+<td>Nexus 4</td>
+</tr>
+
+<tr>
+<td>JDQ39</td>
+<td>android-4.2.2_r1</td>
 <td>latest Jelly Bean version, Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10</td>
 </tr>
+
 </tbody>
 </table>
 <p>The branches froyo, gingerbread, ics-mr0, ics-mr1, jb-dev,
-jb-mr1-dev,
+jb-mr1-dev, jb-mr1.1-dev
 represent development
 branches that do not exactly match configurations that were tested
 by Google. They might contain a variety of changes in addition to
@@ -465,7 +485,7 @@
 <td></td>
 </tr>
 <tr>
-<td>HRI93</td>
+<td>HRI83</td>
 <td>android-3.0_r1.3</td>
 <td></td>
 </tr>
diff --git a/src/source/building-devices.jd b/src/source/building-devices.jd
index 077d448..bbf49ba 100644
--- a/src/source/building-devices.jd
+++ b/src/source/building-devices.jd
@@ -27,41 +27,37 @@
 <p>This page complements the main page about
 <a href="building-running.html">Building and Running</a> with
 information that is specific to individual devices.</p>
+
 <p>With the current release, it is possible to build for
-Nexus 10, for Nexus 7 (Wi-Fi), and for some variants of Galaxy Nexus.
+Nexus 4, Nexus 10, Nexus 7, and for some variants of Galaxy Nexus.
 The exact level of functionality for each device depends on the availability
 of the relevant proprietary hardware-specific binaries.</p>
-<p>All configurations of Nexus 10 can be used. On those devices, graphics, audio,
+<p>For Nexus 4 "mako" and on Nexus 7 "grouper" (Wi-Fi) and "tilapia" (Mobile),
+all configurations can be used,
+and all the hardware is functional.
+Due to hardware differences, do not use 4.1.1 on a Nexus 7 that
+was originally sold with 4.1.2 or newer.</p>
+<p>All configurations of Nexus 10 "manta" can be used. On those devices, graphics, audio,
 Wi-Fi, Bluetooth, camera, NFC, GPS and orientation sensors are functional.</p>
-<p>Nexus 4 cannot be used at the moment.</p>
-<p>The Wi-Fi variants of Nexus 7 can be used. On Nexus 7, graphics and audio are
-functional, as well as Wi-Fi and Bluetooth. Due to hardware differences, do
-not use 4.1.1 on a Nexus 7 that was originally sold with 4.1.2 or newer.
-The Mobile variant is not supported.</p>
 <p>The variants of Galaxy Nexus that can be used are the GSM/HSPA+ configuration
 "maguro" (only if it was originally sold with a "yakju" or "takju" operating
 system) and the VZW CDMA/LTE configuration "toro". On those devices, graphics
 and audio are functional, as well as Wi-Fi, Bluetooth, and access to the
 respective cellular networks. NFC and the orientation sensors are functional.</p>
 <p>The Sprint CDMA/LTE configuration "toroplus" of Galaxy Nexus is supported
-experimentally. On that configuration, the cellular network is not functional,
+experimentally, in the jb-mr1-dev-plus-aosp branch. On that configuration,
+the cellular network is not functional,
 and the other peripherals work like they do on "toro".</p>
 <p>The Motorola Xoom can be used in the Wi-Fi configuration "wingray"
 sold in the USA, with Android 4.1.2. Graphics and audio are functional
 as well as Wi-Fi and Bluetooth and the orientation sensors.</p>
 <p>All configurations of Nexus S and Nexus S 4G can be used with Android 4.1.2.
-On those devices all the peripherals are functional: graphics, audio, Wi-Fi,
-Bluetooth, cell networks, sensors, camera, hardware codecs, NFC, GPS.</p>
+On those devices all the hardware is functional.</p>
 <p>In addition, <a href="http://pandaboard.org">PandaBoard</a> a.k.a. "panda" can be used
-in the master branch, but is considered experimental.
+in the jb-mr1-dev-plus-aosp branch, but is considered experimental.
 The specific details to use a PandaBoard with the Android Open-Source Project
 are in the file <code>device/ti/panda/README</code> in the source tree.</p>
-<p>Nexus One a.k.a. "passion" is obsolete, was experimental in gingerbread,
-and can't be used with newer versions of the Android Open-Source
-Project.</p>
-<p>Android Developer Phones (ADP1 and ADP2, a.k.a. "dream" and "sapphire") are
-obsolete, were experimental in froyo, and can't be used with
-newer versions of the Android Open-Source Project.</p>
+
 <h2 id="building-fastboot-and-adb">Building fastboot and adb</h2>
 <p>If you don't already have those tools, fastboot and adb can be built with
 the regular build system. Follow the instructions on the page about
@@ -156,14 +152,12 @@
 <p>The Android Open-Source Project can't be used
 from pure source code only, and requires additional hardware-related proprietary
 libraries to run, specifically for hardware graphics acceleration.</p>
-<p>Official binaries for Nexus S, Nexus S 4G, Galaxy Nexus, Nexus 7, Nexus 4,
-Nexus 10 and PandaBoard
-can be downloaded from
+<p>Official binaries for the supported devices can be downloaded from
 <a href="https://developers.google.com/android/nexus/drivers">Google's Nexus driver page</a>,
 which add access to additional hardware capabilities with non-Open-Source code.</p>
-<p>When using the master branch for a device, the binaries for the most
-recent numbered release are the ones that should be used in the master
-branch.</p>
+<p>When building the master branch for a device, the binaries for the most
+recent numbered release or with the most recent date
+are the ones that should be used.</p>
 <h3 id="extracting-the-proprietary-binaries">Extracting the proprietary binaries</h3>
 <p>Each set of binaries comes as a self-extracting script in a compressed archive.
 After uncompressing each archive, run the included self-extracting script
@@ -178,7 +172,7 @@
 </code></pre>
 <h2 id="picking-and-building-the-configuration-that-matches-a-device">Picking and building the configuration that matches a device</h2>
 <p>The steps to configure and build the Android Open-Source Project
-are described in the page about <a href="building-running.html">Building and Running</a>.</p>
+are described in the page about <a href="building.html">Building</a>.</p>
 <p>The recommended builds for the various devices are available through
 the lunch menu, accessed when running the <code>lunch</code> command with no arguments:</p>
 <table>
@@ -192,27 +186,32 @@
 <tbody>
 <tr>
 <td>manta</td>
-<td>android-4.2.1_r1 or master</td>
+<td>android-4.2.2_r1 or master</td>
 <td>full_manta-userdebug</td>
 </tr>
 <tr>
+<td>mako</td>
+<td>android-4.2.2_r1 or master</td>
+<td>full_mako-userdebug</td>
+</tr>
+<tr>
 <td>grouper</td>
-<td>android-4.2.1_r1 or master</td>
+<td>android-4.2.2_r1 or master</td>
 <td>full_grouper-userdebug</td>
 </tr>
 <tr>
-<td>tipalia</td>
-<td>android-4.2.1_r1 or master</td>
-<td>full_tilapia-userdebug</td>
+<td>tilapia</td>
+<td>android-4.2.2_r1 or master</td>
+<td>full_grouper-userdebug</td>
 </tr>
 <tr>
 <td>maguro</td>
-<td>android-4.2.1_r1 or master</td>
+<td>android-4.2.2_r1 or master</td>
 <td>full_maguro-userdebug</td>
 </tr>
 <tr>
 <td>toro</td>
-<td>android-4.2.1_r1 or master</td>
+<td>android-4.2.2_r1 or master</td>
 <td>full_toro-userdebug</td>
 </tr>
 <tr>
@@ -264,11 +263,11 @@
 for Nexus 10,
 for Nexus 4,
 for Nexus Q,
-for Nexus 7 (all variants),
+for Nexus 7,
 for Galaxy Nexus (GSM/HSPA+ "yakju" and "takju",
 and CDMA/LTE "mysid" and "mysidspr"),
 and
-for Nexus S and Nexus S 4G (all variants)
+for Nexus S and Nexus S 4G
 are available from
 <a href="https://developers.google.com/android/nexus/images">Google's factory image page</a>.</p>
 <p>Factory images for the Motorola Xoom are distributed directly by Motorola.</p>
\ No newline at end of file
diff --git a/src/source/building-kernels.jd b/src/source/building-kernels.jd
index 0b20a50..3cc6c1e 100644
--- a/src/source/building-kernels.jd
+++ b/src/source/building-kernels.jd
@@ -31,16 +31,98 @@
 clone steps other than the step to download the actual kernel sources.</p>
 <p>We will use the Pandaboard kernel in all the following examples.</p>
 <h2 id="figuring-out-which-kernel-to-build">Figuring out which kernel to build</h2>
-<p>You will want to look at the git log for the kernel in the device project that
-you are interested in.
+<p>This table lists the name and locations of the kernel sources and binaries:
+<table>
+  <tr>
+    <th>Device</th>
+    <th>Binary location</th>
+    <th>Source location</th>
+    <th>Build configuration</th>
+  </tr>
+  <tr>
+    <td>manta</td>
+    <td>device/samsung/manta/kernel</td>
+    <td>kernel/exynos</td>
+    <td>manta_defconfig</td>
+  </tr>
+  <tr>
+    <td>mako</td>
+    <td>device/lge/mako-kernel/kernel</td>
+    <td>kernel/msm</td>
+    <td>mako_defconfig</td>
+  </tr>
+  <tr>
+    <td>grouper</td>
+    <td>device/asus/grouper/kernel</td>
+    <td>kernel/tegra</td>
+    <td>tegra3_android_defconfig</td>
+  </tr>
+  <tr>
+    <td>tilapia</td>
+    <td>device/asus/grouper/kernel</td>
+    <td>kernel/tegra</td>
+    <td>tegra3_android_defconfig</td>
+  </tr>
+  <tr>
+    <td>maguro</td>
+    <td>device/samsung/tuna/kernel</td>
+    <td>kernel/omap</td>
+    <td>tuna_defconfig</td>
+  </tr>
+  <tr>
+    <td>toro</td>
+    <td>device/samsung/tuna/kernel</td>
+    <td>kernel/omap</td>
+    <td>tuna_defconfig</td>
+  </tr>
+  <tr>
+    <td>panda</td>
+    <td>device/ti/panda/kernel</td>
+    <td>kernel/omap</td>
+    <td>panda_defconfig</td>
+  </tr>
+  <tr>
+    <td>stingray</td>
+    <td>device/moto/wingray/kernel</td>
+    <td>kernel/tegra</td>
+    <td>stingray_defconfig</td>
+  </tr>
+  <tr>
+    <td>wingray</td>
+    <td>device/moto/wingray/kernel </td>
+    <td>kernel/tegra</td>
+    <td>stingray_defconfig</td>
+  </tr>
+  <tr>
+    <td>crespo</td>
+    <td>device/samsung/crespo/kernel</td>
+    <td>kernel/samsung</td>
+    <td>herring_defconfig</td>
+  </tr>
+  <tr>
+    <td>crespo4g</td>
+    <td>device/samsung/crespo/kernel</td>
+    <td>kernel/samsung</td>
+    <td>herring_defconfig</td>
+  </tr>
+</table>
+
+<p>You will want to look at the git log for the kernel binary in the device
+project that you are interested in.</p>
+
+
+
 Device projects are of the form device/&lt;vendor&gt;/&lt;name&gt;.</p>
 <pre><code>$ git clone https://android.googlesource.com/device/ti/panda
 $ cd panda
-$ git log kernel
+$ git log --max-count=1 kernel
 </code></pre>
-<p>The log should contain notes of the commit SHA1 for the appropriate
-kernel project.  Keep this value at hand so that you can use it in
-a later step.</p>
+
+<p>The commit message for the kernel binary contains a partial git log
+of the kernel sources that were used to build the binary in question.
+The first entry in the log is the most recent, i.e. the one used to
+build that kernel. You will need it at a later step.</p>
+
 <h2 id="downloading-sources">Downloading sources</h2>
 <p>Depending on which kernel you want,</p>
 <pre><code>$ git clone https://android.googlesource.com/kernel/common.git
@@ -67,9 +149,15 @@
 </ul>
 <h2 id="downloading-a-prebuilt-gcc">Downloading a prebuilt gcc</h2>
 <p>Ensure that the prebuilt toolchain is in your path.</p>
-<pre><code>$ git clone https://android.googlesource.com/platform/prebuilt
-$ export PATH=$(pwd)/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin:$PATH
-</code></pre>
+<pre>$ export PATH=$(pwd)/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin:$PATH</pre>
+
+or
+<pre>$ export PATH=$(pwd)/prebuilts/gcc/darwin-x86/arm/arm-eabi-4.6/bin:$PATH</pre>
+
+<p>On a linux host, if you don't have an Android source tree, you can download
+the prebuilt toolchain from:
+<pre>$ git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6</pre>
+
 <h2 id="building">Building</h2>
 <p>As an example, we would build the panda kernel using the following commands:</p>
 <pre><code>$ export ARCH=arm
@@ -82,14 +170,7 @@
 </code></pre>
 <p>To build the tuna kernel, you may run the previous commands replacing all
 instances of "panda" with "tuna".</p>
-<ul>
-<li>The kernel for mantaray is <code>device/samsung/manta/kernel</code></li>
-<li>The kernel for mako is <code>device/lge/mako-kernel/kernel</code></li>
-<li>The kernel for grouper and tilapia is <code>device/asus/grouper/kernel</code></li>
-<li>The kernel for maguro and toro is <code>device/samsung/tuna/kernel</code></li>
-<li>The kernel for crespo and crespo4g is <code>device/samsung/crespo/kernel</code></li>
-<li>The kernel for stingray and wingray is <code>device/moto/wingray/kernel</code></li>
-</ul>
-<p>The image is output as <code>arch/arm/boot/zImage</code>.  You may copy it as
-<code>device/&lt;vendor&gt;/&lt;name&gt;/kernel</code> or <code>device/ti/panda/kernel</code> in the case of this
-example.</p>
+<p>
+The kernel binary is output as `arch/arm/boot/zImage`, and needs to be copied
+into the Android source tree in order to build the matching boot image.
+</p>
\ No newline at end of file
diff --git a/src/source/downloading.jd b/src/source/downloading.jd
index 7376d41..6d4212e 100644
--- a/src/source/downloading.jd
+++ b/src/source/downloading.jd
@@ -63,6 +63,9 @@
 <p>
   For version 1.17, the SHA-1 checksum for repo is ddd79b6d5a7807e911b524cb223bc3544b661c28
 </p>
+<p>
+  For version 1.19, the SHA-1 checksum for repo is 92cbad8c880f697b58ed83e348d06619f8098e6c
+</p>
 <h2 id="initializing-a-repo-client">
   Initializing a Repo client
 </h2>
diff --git a/src/source/initializing.jd b/src/source/initializing.jd
index 029f308..f53e6fb 100644
--- a/src/source/initializing.jd
+++ b/src/source/initializing.jd
@@ -24,11 +24,50 @@
   </div>
 </div>
 
-<p>Before you begin, ensure that your system meets the <a href="{@docRoot}source/building.html">minimum requirements</a>.
-
-<h2 id="setup-linux">Setting up a Linux Build Environment</h2>
-
-<h3 id="installing-the-jdk">Installing the JDK</h3>
+<h1 id="initializing-a-build-environment">Initializing a Build Environment</h1>
+<p>The "Getting Started" section describes how to set up your local work environment, how to use Repo to get the Android files, and how to build the files on your machine.  To build the Android source files, you will need to use Linux or Mac OS. Building under Windows is not currently supported.</p>
+<p><em>Note: The source download is approximately 8.5GB in size.
+You will need over 30GB free to complete a single build, and
+up to 100GB (or more) for a full set of builds.</em></p>
+<p>For an overview of the entire code-review and code-update process, see <a href="life-of-a-patch.html">Life of a Patch</a>.</p>
+<h1 id="choosing-a-branch">Choosing a Branch</h1>
+<p>Some of the requirements for your build environment are determined by which
+version of the source code you plan to compile. See
+<a href="build-numbers.html">Build Numbers</a> for a full listing of branches you may
+choose from. You may also choose to download and build the latest source code
+(called "master"), in which case you will simply omit the branch specification
+when you initialize the repository.</p>
+<p>Once you have selected a branch, follow the appropriate instructions below to
+set up your build environment.</p>
+<h1 id="setting-up-a-linux-build-environment">Setting up a Linux build environment</h1>
+<p>These instructions apply to all branches, including master.</p>
+<p>The Android build is routinely tested in house on recent versions of
+Ubuntu LTS (10.04), but most distributions should have the required
+build tools available. Reports of successes or failures on other
+distributions are welcome.</p>
+<p>For Gingerbread (2.3.x) and newer versions, including the master
+branch, a 64-bit environment is required. Older versions can be
+compiled on 32-bit systems.</p>
+<p><em>Note: It is also possible to build Android in a virtual machine.
+If you are running Linux in a virtual machine, you will need at
+least 16GB of RAM/swap and 30GB or more of disk space in order to
+build the Android tree.</em></p>
+<p>Detailed instructions for Ubuntu and MacOS follow. In general you will need:</p>
+<ul>
+<li>
+<p>Python 2.6 -- 2.7, which you can download from <a href="http://www.python.org/download/">python.org</a>.</p>
+</li>
+<li>
+<p>GNU Make 3.81 -- 3.82, which you can download from <a href="http://ftp.gnu.org/gnu/make/">gnu.org</a>,</p>
+</li>
+<li>
+<p>JDK 6 if you wish to build Gingerbread or newer; JDK 5 for Froyo or older.  You can download both from <a href="http://java.sun.com/javase/downloads/">java.sun.com</a>.</p>
+</li>
+<li>
+<p>Git 1.7 or newer. You can find it at <a href="http://git-scm.com/download">git-scm.com</a>.</p>
+</li>
+</ul>
+<h2 id="installing-the-jdk">Installing the JDK</h2>
 <p>The Sun JDK is no longer in Ubuntu's main package repository.  In order to download it, you need to add the appropriate repository and indicate to the system which JDK should be used.</p>
 <p>Java 6: for Gingerbread and newer</p>
 <pre><code>$ sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner"
@@ -43,7 +82,7 @@
 </code></pre>
 <p><em>Note: The <code>lunch</code> command in the build step will ensure that the Sun JDK is
 used instead of any previously installed JDK.</em></p>
-<h3 id="installing-required-packages-ubuntu-1004-1110">Installing required packages (Ubuntu 10.04 -- 11.10)</h3>
+<h2 id="installing-required-packages-ubuntu-1004-1110">Installing required packages (Ubuntu 10.04 -- 11.10)</h2>
 <p>You will need a 64-bit version of Ubuntu.  Ubuntu 10.04 is recommended.
 Building using a newer version of Ubuntu is currently only experimentally
 supported and is not guaranteed to work on branches other than master.</p>
@@ -59,17 +98,17 @@
 <p>On Ubuntu 11.10:</p>
 <pre><code>$ sudo apt-get install libx11-dev:i386
 </code></pre>
-<h3 id="installing-required-packages-ubuntu-1204">Installing required packages (Ubuntu 12.04)</h3>
+<h2 id="installing-required-packages-ubuntu-1204">Installing required packages (Ubuntu 12.04)</h2>
 <p>Building on Ubuntu 12.04 is currently only experimentally supported and is not
 guaranteed to work on branches other than master.</p>
 <pre><code>$ sudo apt-get install git gnupg flex bison gperf build-essential \
   zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev \
   libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-glx:i386 \
-  libgl1-mesa-dev g++-multilib mingw32 openjdk-6-jdk tofrodos \
+  libgl1-mesa-dev g++-multilib mingw32 tofrodos \
   python-markdown libxml2-utils xsltproc zlib1g-dev:i386
 $ sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 /usr/lib/i386-linux-gnu/libGL.so
 </code></pre>
-<h3 id="configuring-usb-access">Configuring USB Access</h3>
+<h2 id="configuring-usb-access">Configuring USB Access</h2>
 <p>Under GNU/linux systems (and specifically under Ubuntu systems),
 regular users can't directly access USB devices by default. The
 system needs to be configured to allow such access.</p>
@@ -106,9 +145,9 @@
 SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e42", MODE="0600", OWNER="&lt;username&gt;"
 # fastboot protocol on grouper/tilapia (Nexus 7)
 SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4e40", MODE="0600", OWNER="&lt;username&gt;"
-# adb protocol on mako/manta (Nexus 4, Nexus 10)
+# adb protocol on manta (Nexus 10)
 SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee2", MODE="0600", OWNER="&lt;username&gt;"
-# fastboot protocol on mako/manta (Nexus 4, Nexus 10)
+# fastboot protocol on manta (Nexus 10)
 SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee0", MODE="0600", OWNER="&lt;username&gt;"
 </code></pre>
 <p>Those new rules take effect the next time a device is plugged in.
@@ -118,7 +157,7 @@
 Lucid Lynx (10.04.x LTS). Other versions of Ubuntu or other
 variants of GNU/linux might require different configurations.</p>
 <p><a name="ccache"></a></p>
-<h3 id="setting-up-ccache">Setting up ccache</h3>
+<h2 id="setting-up-ccache">Setting up ccache</h2>
 <p>You can optionally tell the build to use the ccache compilation tool.
 Ccache acts as a compiler cache that can be used to speed-up rebuilds.
 This works very well if you do "make clean" often, or if you frequently
@@ -141,7 +180,7 @@
 <pre><code>prebuilt/linux-x86/ccache/ccache -M 50G
 </code></pre>
 <p>This setting is stored in the CCACHE_DIR and is persistent.</p>
-<h3 id="using-a-separate-output-directory">Using a separate output directory</h3>
+<h2 id="using-a-separate-output-directory">Using a separate output directory</h2>
 <p>By default, the output of each build is stored in the out/
 subdirectory of the matching source tree.</p>
 <p>On some machines with multiple storage devices, builds are
@@ -167,7 +206,7 @@
 unpredictable results.</p>
 <p>This is only supported on Jelly Bean (4.1) and newer,
 including the master branch.</p>
-<h2 id="setting-up-a-mac-os-x-build-environment">Setting up a Mac OS X build environment</h2>
+<h1 id="setting-up-a-mac-os-x-build-environment">Setting up a Mac OS X build environment</h1>
 <p>In a default installation, OS X runs on a case-preserving but case-insensitive
 filesystem. This type of filesystem is not supported by git and will cause some
 git commands (such as "git status") to behave abnormally. Because of this, we
@@ -191,14 +230,14 @@
 function mountAndroid { hdiutil attach ~/android.dmg -mountpoint /Volumes/android; }
 </code></pre>
 <p>Once mounted, you'll do all your work in the "android" volume. You can eject it (unmount it) just like you would with an external drive.</p>
-<h3 id="master-branch">Master branch</h3>
+<h2 id="master-branch">Master branch</h2>
 <p>To build the latest source in a Mac OS environment, you will need an Intel/x86
 machine running MacOS 10.6 (Snow Leopard) or MacOS 10.7 (Lion), along with Xcode
 4.2 (Apple's Developer Tools). Although Lion does not come with a JDK, it should
 install automatically when you attempt to build the source.</p>
 <p>The remaining sections for Mac OS X only apply to those who wish to build
 earlier branches.</p>
-<h3 id="branch-40x-and-all-earlier-branches">Branch 4.0.x and all earlier branches</h3>
+<h2 id="branch-40x-and-all-earlier-branches">Branch 4.0.x and all earlier branches</h2>
 <p>To build android-4.0.x and earlier branches in a Mac OS environment, you need an
 Intel/x86 machine running MacOS 10.5 (Leopard) or MacOS 10.6 (Snow Leopard). You
 will need the MacOS 10.5 SDK.</p>
@@ -255,8 +294,11 @@
 </li>
 </ul>
 <h3 id="setting-a-file-descriptor-limit">Setting a file descriptor limit</h3>
-<p>On MacOS the default limit on the number of simultaneous file descriptors open is too low and a highly parallel build process may exceed this limit.  </p>
+<p>On MacOS the default limit on the number of simultaneous file descriptors open is too low and a highly parallel build process may exceed this limit.<br />
+</p>
 <p>To increase the cap, add the following lines to your <code>~/.bash_profile</code>: </p>
 <pre><code># set the number of open files to be 1024
 ulimit -S -n 1024
 </code></pre>
+<h1 id="next-download-the-source">Next: Download the source</h1>
+<p>Your build environment is good to go!  Proceed to <a href="downloading.html">downloading the source</a>....</p>
\ No newline at end of file
diff --git a/src/source/known-issues.jd b/src/source/known-issues.jd
index 33ceb16..886055d 100644
--- a/src/source/known-issues.jd
+++ b/src/source/known-issues.jd
@@ -26,6 +26,15 @@
 
 <p>Even with our best care, small problems sometimes slip in. This page keeps
 track of the known issues around using the Android source code.</p>
+
+<h2 id="missing-cellbroadcastreceiver">Missing CellBroadcastReceiver in toro builds</h2>
+<p><strong>Symptom</strong</p>On AOSP builds for toro (up to Jelly Bean 4.2.1),
+CellBroadcastReceiver doesn't get included in the system.</p>
+
+<p><strong>Cause</strong></p>: There's a typo in <code>vendor/samsung/toro/device-partial.mk</code>,
+where <code>PRODUCT_PACKAGES</code> has the K replaced by an H.
+<p><strong>Fix</strong>: Use the latest packages for 4.2.2, or manually fix the typo.</p>
+
 <h2 id="missing-cts-native-xml-generator">Missing CTS Native XML Generator</h2>
 <p><strong>Symptom</strong>: On some builds of IceCreamSandwich and later, the following
 warning is printed early during the build:
diff --git a/src/source/submit-patches.jd b/src/source/submit-patches.jd
index 6d555c5..11fecca 100644
--- a/src/source/submit-patches.jd
+++ b/src/source/submit-patches.jd
@@ -185,6 +185,17 @@
 <p>All changes to the ICU4C project at <code>external/icu4c</code> should be made upstream at
 <a href="http://site.icu-project.org/">icu-project.org/</a>.
 See <a href="http://site.icu-project.org/bugs">Submitting ICU Bugs and Feature Requests</a> for more.</p>
+
+<h2 id="llvmclangcompiler-rt">LLVM/Clang/Compiler-rt</h2>
+<p>All changes to LLVM-related projects (<code>external/clang</code>, <code>external/compiler-rt</code>,
+<code>external/llvm</code>) should be made upstream at
+<a href="http://llvm.org/">llvm.org/</a>.</p>
+
+<h2 id="mksh">
+<p>All changes to the MirBSD Korn Shell project at <code>external/mksh</code> should be made upstream
+either by sending an email to miros-mksh on the mirbsd.o®g domain (no subscription
+required to submit there) or (optionally) at <a href="https://launchpad.net/mksh">Launchpad</a>.
+</p>
 <h2 id="openssl">OpenSSL</h2>
 <p>All changes to the OpenSSL project at <code>external/openssl</code> should be made upstream at
 <a href="http://www.openssl.org">openssl.org</a>.</p>