open-keychain/OpenKeychain/src/main/res/layout/help_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include
        android:id="@+id/toolbar"
        layout="@layout/toolbar" />

    <LinearLayout
        android:layout_below="@id/toolbar"

        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <org.sufficientlysecure.keychain.ui.widget.SlidingTabLayout
            android:id="@+id/sliding_tab_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </LinearLayout>
</RelativeLayout>