View difference between Paste ID: 5SLveXFe and

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+<?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent" >
     <LinearLayout
 		<!--Giving the Header a reference ID-->
 		android:id="@+id/header"
 		android:layout_width="fill_parent"
 		android:layout_height="20dp"
 		android:layout_alignParentTop="true"
 		android:background="#000000" >
 		<TextView
 			android:layout_width="fill_parent"
 			android:layout_height="wrap_content"
 			android:textSize="15sp"
 			android:textColor="#ffffff"
 			android:text="My header" />
 	</LinearLayout>
 
 	<ScrollView
 		android:layout_width="fill_parent"
 		android:layout_height="fill_parent"
 		<!--Here, we tell it to place the top edge of the ScrollView
 		below the bottom edge of the header-->
 		android:layout_below="@id/header"
 		<!--Here, we tell it to place the bottom edge of the ScrollView
 		above the top edge of the footer-->
 		android:layout_above="@id/footer"
 		android:layout_weight="1"
 		android:gravity="bottom"
 		android:background="#894545">
 		<LinearLayout
 			android:orientation="vertical"
 		    android:layout_width="fill_parent"
 		    android:layout_height="wrap_content" />
 	</ScrollView>
 
 	<LinearLayout
 		<!--Here, we give the footer a reference ID-->
 		android:id="@+id/footer"
 		android:layout_width="fill_parent"
 		android:layout_height="wrap_content"
 		android:padding="2dp"
 		android:layout_alignParentBottom="true"
 		android:isScrollContainer="true"
 		android:background="@drawable/steel" >
 		<EditText
 			android:layout_width="fill_parent"
 			android:layout_height="wrap_content"
 			android:layout_weight="0.2"
 			android:scrollbars="vertical"
 			android:fadingEdge="vertical"
 			android:maxHeight="40dp"
 			android:textSize="15sp" />
 		<Button
 			android:layout_width="fill_parent"
 			android:layout_height="wrap_content"
 			android:layout_weight="0.8"
 			android:layout_gravity="right"
 			android:text="Send"
 			android:textStyle="bold"
 			android:textSize="15sp" />
 	</LinearLayout>
 </RelativeLayout>