am 4d29493e: am 0d54b806: am 60026c3a: Merge "Doc change: adjust compatibility doc." into froyo

<h3 id="defined">What does “Compatibility” mean?</h3>

<p>A device is “Android compatible” if it can run apps written for the

<em>Android execution environment</em>. The exact details of the Android

execution environment are defined by the Android Compatibility Definition

Document, but the single most to the ability to install and correctly run an

Android <code>.apk</code> file.</p>

<p>A device is “Android compatible” if it can correctly run apps written for the

<em>Android execution environment</em>.</p>

<p>There is exactly one Android API for each <a

href="{@docRoot}guide/appendix/api-levels.html">API level</a>, and it’s the same

ones, we will always take steps to protect existing applications so that they

don’t end up being available to devices where they won’t work.</p>

<p>This is implemented using the <code>aapt</code> tool in the SDK. To see which

features your app explicitly requires or is implicitly assumed to require, you

can use the command <code>aapt dump badging</code>.</p>

<h3 id="conclusion">Conclusion</h3>

<p>The goal of Android is to create a huge installed base for developers to take