Docs: Revised the Drawable example am: ad302b60 am: 32bda49a am: 618d339f

<h4>Drawable</h4>

<p>To create an alias to an existing drawable, use the {@code <bitmap>} element.

For example:</p>

<p>

  To create an alias to an existing drawable, use the {@code <drawable>}

  element. For example:

</p>

<pre>

<?xml version="1.0" encoding="utf-8"?>

<bitmap xmlns:android="http://schemas.android.com/apk/res/android"

    android:src="@drawable/icon_ca" />

<resources>

    <drawable name="icon">@drawable/icon_ca</drawable>

</resources>

</pre>

<p>If you save this file as {@code icon.xml} (in an alternative resource directory, such as

{@code res/drawable-en-rCA/}), it is compiled into a resource that you

can reference as {@code R.drawable.icon}, but is actually an alias for the {@code

R.drawable.icon_ca} resource (which is saved in {@code res/drawable/}).</p>

<p>

  If you save this file as {@code drawables.xml} (in an alternative resource

  directory, such as {@code res/values-en-rCA/}), it is compiled into a

  resource that you can reference as {@code R.drawable.icon}, but is actually

  an alias for the {@code R.drawable.icon_ca} resource (which is saved in

  {@code res/drawable/}).

</p>

<h4>Layout</h4>