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+<html devsite>
+  <head>
+    <title>Permitted Version Strings for Android 8.1</title>
+    <meta name="project_path" value="/_project.yaml" />
+    <meta name="book_path" value="/_book.yaml" />
+  </head>
+  <body>
+  <!--
+      Copyright 2017 The Android Open Source Project
+
+      Licensed under the Apache License, Version 2.0 (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+  -->
+
+
+
+<p>As described in Section 3.2.2 of the <a
+href="android-8.1-cdd.pdf">Android 8.1 Compatibility Definition</a>,
+only certain strings are allowable for the system property
+<code>android.os.Build.VERSION.RELEASE</code>. The reason for this is that
+applications and web sites may rely on predictable values for this string, and
+so that end users can easily and reliably identify the version of Android
+running on their devices.</p>
+<p>Because subsequent releases of the Android software may revise this string,
+but not change any API behavior, such releases may not be accompanied by a new
+Compatibility Definition Document. This page lists the versions that are
+allowable by an Android 8.1-based system. The only permitted values for
+<code>android.os.Build.VERSION.RELEASE</code> for Android 8.1 are:</p>
+<ul>
+<li>8.1</li>
+</ul>
+
+  </body>
+</html>