diff --git a/lab000-important-terms.xml b/lab000-important-terms.xml
index 70ee594c..83685596 100644
--- a/lab000-important-terms.xml
+++ b/lab000-important-terms.xml
@@ -1,60 +1,59 @@
 <?xml version="1.0" encoding="utf-8"?>
 <chapter xmlns="http://docbook.org/ns/docbook"
   xmlns:xi="http://www.w3.org/2001/XInclude"
-  xmlns:xlink="http://www.w3.org/1999/xlink"
- version="5.0"
+  xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
   xml:id="lab000-important-terms">
-  <title>Important Terms</title>
-  <para><emphasis role="bold">Host Operating System (Host)
-      :</emphasis></para>
-  <para>‘Host OS’ or ‘Host’ is commonly referred to the Operating
-    System installed on your hardware (Laptop/Desktop) and hosts the
-    virtual machines. In short, the machine on which your Virtual Box
-    is installed.</para>
-  <para><emphasis role="bold">Guest Operating System
-      (Guest):</emphasis></para>
-  <para>    ‘Guest OS’ or ‘Guest’ is commonly referred to the
-    Operating System installed on your Virtual Box Virtual Machine and
-    is an Virtual Instance independent of the host OS.</para>
-  <para><emphasis role="bold">Node :</emphasis></para>
-  <para>Node in this context is referring specifically to Servers.
-    Each OpenStack server is a node.</para>
-  <para><emphasis role="bold">Control Node:</emphasis></para>
-  <para>    Control Node hosts the Database, Keystone (Middleware) and
-    the servers for the scope of the current OpenStack deployment. It
-    is kind of like the ‘brains behind OpenStack’ and drives the
-    services like authentication, database etc.</para>
-  <para><emphasis role="bold">Compute Node:</emphasis></para>
-  <para>    Compute Node has the required Hypervisor (Qemu/KVM), and
-    is your Virtual Machine Host.</para>
-  <para><emphasis role="bold">Network Node:</emphasis></para>
-  <para>    Network Node provides Network as a Service and is
-    responsible for providing virtual networks for OpenStack.</para>
-  <para><guilabel>Using OpenSSH</guilabel></para>
-  <itemizedlist>
-    <listitem>
-      <para>Once you are done with setting up of network interfaces
-        file, you may switch over to SSH session by remote login into
-        the required server node (Control, Network, Compute) by using
-        OpenSSH Client.</para>
-    </listitem>
-    <listitem>
-      <para>Open Terminal on your Host machine, and type in the
-        following command</para>
-    </listitem>
-  </itemizedlist>
- <programlisting>$ssh-keygen -t rsa</programlisting>
-  <itemizedlist>
-    <listitem>
-      <para>You should see similar output  :</para>
-      <programlisting>Generating public/private rsa key pair.
+  <title>Important terms</title>
+  <formalpara>
+    <title>Host Operating System (Host)</title>
+    <para>The operating system that is installed on your laptop or
+      desktop that hosts virtual machines. Commonly referred to as
+        <firstterm>host OS</firstterm> or <firstterm>host</firstterm>.
+      In short, the machine where your Virtual Box is
+      installed.</para>
+  </formalpara>
+  <formalpara>
+    <title>Guest Operating System (Guest)</title>
+    <para>The operating system that is installed on your Virtual Box
+      Virtual Machine. This virtual instance is independent of the
+      host OS. Commonly referred to as <firstterm>guest OS</firstterm>
+      or <firstterm>guest</firstterm>.</para>
+  </formalpara>
+  <formalpara>
+    <title>Node</title>
+    <para>In this context, refers specifically to servers. Each
+      OpenStack server is a node.</para>
+  </formalpara>
+  <formalpara>
+    <title>Control Node</title>
+    <para>Hosts the database, Keystone (Middleware), and the servers
+      for the scope of the current OpenStack deployment. Acts as the
+      brains behind OpenStack and drives services such as
+      authentication, database, and so on.</para>
+  </formalpara>
+  <formalpara>
+    <title>Compute Node</title>
+    <para>Has the required Hypervisor (Qemu/KVM) and is your Virtual
+      Machine host.</para>
+  </formalpara>
+  <formalpara>
+    <title>Network Node</title>
+    <para>Provides Network-as-a-Service and virtual networks for
+      OpenStack.</para>
+  </formalpara>
+  <formalpara>
+    <title>Using OpenSSH</title>
+    <para>After you set up the network interfaces file, you can switch
+      to an SSH session by using an OpenSSH client to log in remotely
+      to the required server node (Control, Network, Compute). Open a
+      terminal on your host machine. Run the following command:
+      <screen><prompt>$</prompt> <userinput>ssh-keygen -t rsa</userinput></screen><screen><computeroutput>Generating public/private rsa key pair.
 Enter file in which to save the key (/u/kim/.ssh/id_rsa): [RETURN]
 Enter passphrase (empty for no passphrase): &lt;can be left empty>
 Enter same passphrase again: &lt;can be left empty>
 Your identification has been saved in /home/user/.ssh/id_rsa.
 Your public key has been saved in /home/user/.ssh/id_rsa.pub.
 The key fingerprint is:  
-b7:18:ad:3b:0b:50:5c:e1:da:2d:6f:5b:65:82:94:c5 xyz@example</programlisting>
-    </listitem>
-  </itemizedlist>
+b7:18:ad:3b:0b:50:5c:e1:da:2d:6f:5b:65:82:94:c5 xyz@example</computeroutput></screen></para>
+  </formalpara>
 </chapter>