~gumara/ubuntu-desktop-course/ubuntu-desktop-course-th-gumara

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<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://docbook.org/xml/4.3/docbookx.dtd">
<chapter>
  <title>Exploring the Ubuntu Desktop</title>

  <formalpara>
    <title>Objectives</title>
    <para>In this lesson, you will learn: 
			<itemizedlist>
				<listitem>
					<para>The highlights of Ubuntu desktop</para>
				</listitem>
				<listitem>
					<para>How to change the default language</para>
				</listitem>
				<listitem>
					<para>How to create a new user account and enjoy fast user
						switching</para>
				</listitem>
				<listitem>
					<para>To add and remove applications</para>
				</listitem>
				<listitem>
					<para>How to enable 3D Desktop effects</para>
				</listitem>
				<listitem>
					<para>To use the desktop search tracker</para>
				</listitem>
  		</itemizedlist>
    <note userlevel="instructor">
      <title>Instructor Notes:</title>
      <para>
				<emphasis role="italic">All the topics in this lesson are
					mandatory. To familiarise the students with the basic
					features of the new desktop, this lesson should primarily be
          a hands on session.</emphasis>
      </para>
    </note></para>
  </formalpara>

  <para>This section serves as a quick tour of the Ubuntu desktop.
  The course will go into more detail in later lessons, but this
  will give you a taste of what's ahead.</para>
  <sect1>

    <title>GNOME Desktop Components</title>
    <note userlevel="instructor">

      <title>Instructor Notes:</title>

				<para>
					<emphasis role="italic">Highlight the fact that unlike
						other operating systems, Ubuntu comes with a completely
						clean desktop, by default. Users are free to add icons and
						files on the desktop according to their
						preferences.</emphasis>
				</para>
			</note>
    <para>GNOME is the default desktop environment for Ubuntu.
    GNOME (GNU Network Object Model Environment) is an
    international effort to build a complete desktop
    environment—the graphical user interface, which sits on top of
    a computer operating system—entirely from free software. This
    goal includes creating software development frameworks,
    selecting application software for the desktop and working on
    the programmes which manage application launching, file
    handling and window and task management. Community members
    worldwide contribute to the translation and accessibility of
    the desktop in multiple languages. (Reference: 
    <ulink url="http://en.wikipedia.org/wiki/GNOME">http://en.wikipedia.org/wiki/GNOME</ulink>)</para>

    <formalpara>
			<title>Key Desktop Components on Ubuntu</title>
			<para>When you start your computer, the first screen displayed
				on Ubuntu is the logon screen, where you type your user name
				and password. The next screen displayed is the Ubuntu desktop.
				Ubuntu comes with a completely clean desktop background, free
    of icons by default.</para>
    </formalpara>
    <note userlevel="instructor">

      <title>Instructor Notes:</title>
      <para>Ensure that you browse through each element very
      quickly because more details will be covered in the
      subsequent lessons.</para>
    </note>
    <figure id="fig-desktop" float="0">
      <title>Default Ubuntu Desktop</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_001.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>You can arrange icons and files on the desktop to access
    them quickly. If a CD, hard disk or any other external device is
    connected to your computer, Ubuntu automatically displays its icon
    on the desktop to allow easy access to the device.</para>

    <figure float="0">
      <title>Desktop Icons</title>

      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_002.png" width="4cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>

    <para>At the top and bottom of the desktop are two bars, called
    panels.</para>
    <figure float="0">
      <title>Desktop Panels</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_003.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>There are three main menus in the left pane of the top
    panel: Applications, Places and System. 
    <itemizedlist>
      <listitem>
        <formalpara>
          <title>Applications:</title>
          <para>This menu contains all the applications installed
          on your computer such as games, music players, Web
          browsers and e-mail clients.</para>
        </formalpara>
        <figure float="0">
          <title>The Application Menu</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_004.png" width="4cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </listitem>
      <listitem>
        <formalpara>
          <title>Places:</title>
					<para>This menu
						provides access to your home directory, external devices
        and network on your computer.</para>
        </formalpara>
        <figure float="0">
          <title>The Places Menu</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_005.png" width="4cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
        <note>
          <title>Note:</title>
					<para>The Home directory is created by default for every
						user and automatically takes the username. It contains
						all user-specific files. In a multi-user system, every
						user stores personal data in a sub-directory of this
          directory.</para>
        </note>
      </listitem>
      <listitem>
        <formalpara>
          <title>System:</title>
	  <para>This menu enables you to change the computer
	  settings. You can also access the Ubuntu help system and
	  turn off your computer here.</para>
        </formalpara>
        <figure float="0">
          <title>The System Menu</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_006.png" width="5cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </listitem>
    </itemizedlist></para>
    <para>By default, there are three shortcut icons next to the
    menus on the top panel: Mozilla Firefox, Evolution and Help.
    You can create additional shortcuts to any applications and
    place them here for quick access.</para>
    <figure float="0">
      <title>The Shortcut Icons</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_007.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <procedure>
      <title>To add a new shortcut icon to the desktop
      panel:</title>
      <step performance="required">
        <para>Right-click the blank area of the top panel and click
        
        <emphasis role="strong">Add to Panel</emphasis>. The 
        <emphasis role="strong">Add to Panel</emphasis> dialogue box
        appears.</para>
        <figure float="0">
          <title>Adding a Shortcut Icon</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_008.png" width="11cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>The 
        <emphasis role="strong">Add to Panel</emphasis> dialogue box
        displays a list of applications available on your computer.
        Select an application and click 
        <emphasis role="strong">Add</emphasis> to add it to the
        blank area of the desktop. If you want to launch the
        programmes available on the 
        <emphasis role="strong">Applications</emphasis> menu, click 
        <emphasis role="strong">Application
        Launcher</emphasis>.</para>
        <note>
          <title>Note:</title>
          <para>Alternatively, you can drag an application icon
          from the Add to Panel dialogue box and drop the icon on
          the panel to create a short cut to the
          application.</para>
        </note>
        <figure float="0">
          <title>Adding Application Launchers</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_009.png" width="9cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>The applications grouped in a category similar to the
        
        <emphasis role="strong">Applications</emphasis> menu
        appears. Select an application from the available list, and
        click 
        <emphasis role="strong">Add</emphasis>.</para>
        <figure float="0">
          <title>Selecting Applications</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_010.png" width="10cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
        <para>The icon of the selected application will be
        displayed on the blank area of the top panel.</para>
        <figure float="0">
          <title>Adding Application Launchers</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_011.png" width="11cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
    </procedure>
    <para>You can change the location of the newly created shortcut
    icon by right-clicking it and selecting 
    <emphasis role="strong">Move</emphasis>. Move the icon anywhere
    on the top panel and left-click the icon to freeze its
    location.</para>
    <figure float="0">
      <title>Moving Shortcut Icons</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_012.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Next to the blank area on the top panel (where you can
    create short cuts of the application) is the fast user switch
    icon. This icon shows the current user of your computer. You
    can click the icon to view other users on the computer and
    switch to another user.</para>
    <note>
      <title>Note:</title>
      <para>You will learn more about fast user switching in the 
      <emphasis role="strong">Fast User Switching</emphasis> topic
      of this lesson.</para>
    </note>
    <figure float="0">
      <title>The Fast User Switch Icon</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_013.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Next to the fast user switch icon is the search tool
    icon. This icon helps you search information on your computer.
    Clicking this icon displays the 
    <emphasis role="strong">Deskbar Applet</emphasis> dialogue box,
    where you can type a search keyword in the 
    <emphasis role="strong">Search</emphasis> box. You can also open
    this dialogue box by pressing the F11 key.</para>
    <para>This dialogue box also helps you to: 
    <itemizedlist>
      <listitem>
        <para>Launch applications by searching for either the
        application name or its executable file name.</para>
      </listitem>
      <listitem>
        <para>Look up a word in the dictionary.</para>
      </listitem>
    </itemizedlist></para>
    <figure float="0">
      <title>The Search Tool</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_014.png" width="6cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Adjacent to the search tool icon is the System tray. It
    contains the network and sound icons for quick access to
    network and sound settings. You can check the network
    configuration of the computer and adjust the volume of your
    computer's speaker.</para>
    <para>The current date and time is displayed next to the System
    tray. If you click the date and time, a calendar is
    displayed.</para>
    <para>The last icon on the top panel shuts down, restarts,
    hibernates, locks your computer and places it on
    standby.</para>
    <figure float="0">
      <title>Top Panel Icons</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_015.png" width="5cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>The first icon on the bottom panel provides quick access
    to the desktop. If multiple windows are open on your desktop
    and you would like to minimise all of them together, click this
    icon. Clicking again will display your windows in their
    original state, before you minimised them.</para>
    <figure float="0">
      <title>Show the Desktop</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_016.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Next to the icon used to minimise the windows is a blank
    area in which the list of open application windows appears,
    similar to the taskbar in Windows. When you open an
    application, it's listed on this area for easy access, as shown
    in the bottom panel of the following screen:</para>
    <figure float="0">
      <title>Open Applications</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_017.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>The next icon, workspace, enables you to split the
    windows that are open on your desktop into multiple workspaces.
    You can then navigate among the workspaces by pressing and
    holding down the CTRL+ALT keys, and then pressing either the
    left or the right arrow key. This reduces the clutter on your
    desktop and eases navigation between windows.</para>
    <para>For example, you might have the Firefox window, an
    OpenOffice application, a search window and a calculator window
    open on the desktop.</para>
    <figure float="0">
      <title>The Workspace Icon</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_018.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>You can move the Firefox window to a separate workspace
    by pressing and holding down the CTRL+ALT+SHIFT keys and then
    pressing the left or the right arrow key. Two workspaces will
    be displayed in the bottom-right corner of the desktop - one
    workspace with the Firefox window and the original workspace
    with the other windows.</para>
    <figure float="0">
      <title>Switching Workspaces</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_019.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Now, you have two separate workspaces. Notice that the
    Firefox window has shifted to the original workspace. So,
    depending on the task you perform, you can split the windows
    into different workspaces.</para>
    <figure float="0">
      <title>Splitting Windows into Workspaces</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_020.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>By default, Ubuntu provides two workspaces. If you want
    to split the windows into more workspaces, you have to add the
    workspace to the desktop by right-clicking the workspace icon
    and then clicking 
    <emphasis role="strong">Preferences</emphasis>. The 
    <emphasis role="strong">Workspace Switcher
    Preferences</emphasis> dialogue box appears.</para>
    <figure float="0">
      <title>Creating New Workspaces</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_021.png" width="3cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>In the 
    <emphasis role="strong">Workspace Switcher
    Preferences</emphasis> dialogue box, type or select the number
    of workspaces from the 
    <emphasis role="strong">Number of workspaces</emphasis> list and
    click 
    <emphasis role="strong">Close</emphasis>.</para>
    <figure float="0">
      <title>Workspace Switcher Preferences</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_022.png" width="5cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>The specified number of workspaces will be displayed in
    the bottom-right corner of the desktop.</para>
    <para>The last icon in the bottom panel is the 
    <emphasis role="strong">Waste basket</emphasis>. It contains
    the files you deleted from your computer. Right-click the icon
    and click 
    <emphasis role="strong">Open</emphasis> to open the 
    <emphasis role="strong">Trash</emphasis> window.</para>
    <figure float="0">
      <title>The Waste Basket Icon</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_023.png" width="2cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>You can delete an item permanently from the computer by
    pressing the DELETE key.</para>
    <note>
      <title>Note:</title>
      <para>Alternatively, you can right-click the item and click 
      <emphasis role="strong">Delete from Trash</emphasis> to
      permanently delete it from the computer.</para>
    </note>
    <para>If you want to restore the deleted item to the desktop,
    drag that item to the desktop from the 
    <emphasis role="strong">Trash</emphasis> window.</para>
    <figure float="0">
      <title>Deleting Items from Trash</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_024.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
  </sect1>
  <sect1>
    <title>Changing the Default Language</title>
    <para>Ubuntu supports more than 100 languages. You can set the
    default language of your computer either during the
    installation of Ubuntu or at a later stage.</para>
    <para>To change the default language during the installation,
    select the required language when prompted.</para>
    <procedure>
      <title>To change the default language at a later
      stage:</title>
      <step performance="required">
        <para>On the 
        <emphasis role="strong">System</emphasis> menu, point to 
        <emphasis role="strong">Administration</emphasis> and click 
        <emphasis role="strong">Language Support</emphasis>. The
        system prompts you to install language support if updates
        are available for your selected language.</para>
        <figure float="0">
          <title>Configuring Language Support</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_025.png" width="11cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>Click 
        <emphasis role="strong">Install</emphasis> to continue. On
        completing the updates, the 
        <emphasis role="strong">Language Support</emphasis> dialogue
        box opens.</para>
        <figure float="0">
          <title>Installing Language Support Updates</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_026.png" width="6cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>In the 
        <emphasis role="strong">Language Support</emphasis> dialogue
        box, from the 
        <emphasis role="strong">Supported
			 Languages</emphasis> section, select the check box for the
			language you want to use for support functions in
        Ubuntu.</para>
        <figure float="0">
          <title>Installing Default Language Support</title>

          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_027.png" width="6cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>Click 
        <emphasis role="strong">Apply</emphasis> and then click 
        <emphasis role="strong">OK</emphasis>. Ubuntu downloads and
        installs the necessary packages on your computer. The
        language you selected will now appear in the 
        <emphasis role="strong">Default
        Language</emphasis> box.</para>
      </step>
      <step performance="required">
        <para>Select the language that you want set as default, and
        click 
        <emphasis role="strong">OK</emphasis>.</para>
      </step>
      <step performance="required">
        <para>For the changes to take effect, log off and then log
        on again.</para>
      </step>
    </procedure>
    <note>
      <title>Nice to Know:</title>
      <para>You can change the language as many times as you would
      like and this can depend on your location. For example,
      changing the language to Russian may be a nice touch when
      presenting in Russia during a business trip.</para>
    </note>
  </sect1>
  <sect1>
    <title>Creating a User Account and Fast User Switching</title>
    <note userlevel="instructor">
      <title>Instructor Notes:</title>

				<para>Advise students that to understand
					the concept of fast user switching, they need to have more
					than one user account on their computer. Walk the students
					through creating a new user on their computer, and then
        move on to the concept of fast user switching.</para>
    </note>
    <para>You may have multiple users who want to access your
    system. In this case, there is a risk of data being manipulated or
    corrupted by other users. To prevent this from happening, you can
    create user accounts for each individual who wants to use your
    computer, giving each user an individual account with personalised
    user settings. For example, it is useful to give children their
    own accounts on the computer to prevent then from changing your
    settings or accessing unsuitable files and applications..</para>
    <procedure>
      <title>To create a new user account on Ubuntu:</title>
      <step performance="required">

        <para>On the 
        <emphasis role="strong">System</emphasis> menu, point to 
        <emphasis role="strong">Administration</emphasis> and click 
        <emphasis role="strong">Users and Groups</emphasis>. The 
        <emphasis role="strong">User settings</emphasis> dialogue
        box appears.</para>
        <figure float="0">
          <title>Adding/Removing Users</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_028.png" width="11cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>In the 
        <emphasis role="strong">User settings</emphasis> dialogue
        box, click 
        <emphasis role="strong">Add User</emphasis> to add a new
        user account on your computer. The 
        <emphasis role="strong">New user account</emphasis> dialogue
        box opens.</para>
        <figure float="0">
          <title>Adding a User</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_029.png" width="6cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>Specify the user accounts' basic settings, contact
        information and password information in the 
        <emphasis role="strong">New user account</emphasis> dialogue
        box.</para>
        <substeps performance="required">
          <step performance="required">
            <para>Type the name with which you want to log on to
            your computer in the 
            <emphasis role="strong">Username</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Type your full name in the 
            <emphasis role="strong">Real name</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Select your user type from the 
            <emphasis role="strong">Profile</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Type your office location in the 
            <emphasis role="strong">Office
            location</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Type your work phone number in the 
            <emphasis role="strong">Work
            phone</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Type your home phone number in the 
            <emphasis role="strong">Home
            phone</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Type the password for your user account in the 
            <emphasis role="strong">User
            password</emphasis> box.</para>
          </step>
        </substeps>
        <note>
          <title>Note:</title>
          <para>This information is for record keeping only, and
          other users cannot view it.</para>
        </note>
        <para>Click 
        <emphasis role="strong">Close</emphasis> to save the
        settings.</para>
        <figure float="0">
          <title>Configuring New User Account</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_030.png" width="6cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>A new user account will be displayed in the User
				settings dialogue box. This dialogue box displays the new
				user's full name and login name. It also tells you the
        location of the new user account created.</para>
        <figure float="0">
          <title>The New User Account</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_031.png" width="6cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
    </procedure>
    <para>Now, if you click the fast user switch icon, there will
    be two users displayed and the current user logged on to the
    computer will be marked.</para>
    <figure float="0">
      <title>Switching Users</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_032.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>This feature prevents you from logging off and logging on
    all the time to switch users. It allows multiple users to
    switch quickly while staying logged on. By simply clicking the
    fast user switching icon, a list of the user names appears.
    Select the user name and you will be directed to the logon
    screen. Type the user name and password, and you will be on a
    desktop of the new user. When you switch to another user, the
    previous user screen is locked by default, so the other person
    cannot make any profile changes.</para>
  </sect1>
  <sect1>
    <title>Adding/Removing Applications</title>
    <note userlevel="instructor">
      <title>Instructor Notes:</title>
      <para>Advise students that you will cover this topic in
      detail while teaching the 
      <emphasis role="strong">Customising Ubuntu and
      Applications</emphasis> lesson of this course. This topic is
      just an introduction.</para>
      <para>Tell the students that you will cover this topic in
      detail while teaching the 
      <emphasis role="strong">Customising the Desktop and
      Application</emphasis> lesson of this course. This topic is
      just an introduction.</para>
    </note>
    <itemizedlist>
    <title>Use the Add/Remove applications when you need to:</title>
      <listitem>
        <para>Use software not provided as a default application on
        Ubuntu.</para>
      </listitem>
      <listitem>
        <para>Try an alternative application to the one already
        installed</para>
      </listitem>
    </itemizedlist>
    <para>Ubuntu contains pre-loaded software that you can easily
    install on your computer when required. You can install this
    software by using the Add/Remove application or the Synaptic
    Package Manager utility of Ubuntu. To access the Add/Remove
    application, on the 
    <emphasis role="strong">Applications</emphasis> menu, click 
    <emphasis role="strong">Add/Remove</emphasis>.</para>
    <figure float="0">
      <title>Launching Add/Remove Applications</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_033.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>To access Synaptic Package Manager, on the 
    <emphasis role="strong">System</emphasis> menu, point to 
    <emphasis role="strong">Administration</emphasis> and click 
    <emphasis role="strong">Synaptic Package
    Manager</emphasis>.</para>
    <figure float="0">
      <title>Launching Synaptic Package Manager</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_034.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
    <para>Synaptic offers an advanced way of installing packages.
    If you do not find a software programme in the Add/Remove tool,
    you can search for it in Synaptic. It searches all software in
    the available repositories on Ubuntu.</para>
  </sect1>
  <sect1>
    <title>Desktop Effects - Compiz Fusion</title>
    <note userlevel="instructor">
      <title>Instructor Notes:</title>
      <para>Advise students that to view desktop effects, computers
      must have a 3D-enabled graphic card.</para>
    </note>
    <para>Compiz Fusion is a 3D window manager that makes use of 3D
    accelerated graphics cards found today on many desktops and
    laptops. It provides a number of visual effects that makes the
    Linux desktop more powerful and intuitive, as well as easier
    and more fun to use. For example, you can place workspaces on a
    cube, which enables you to move from one workspace to another
    easily.</para>
    <para>Compiz Fusion is enabled by default on Ubuntu 7.10 with
    appropriate graphics cards. It enables the 3D desktop visual
    effects that improve the usability and visual appeal of the
    system. You really have to see and play with this application
    to appreciate the benefits.</para>
    <procedure>
      <title>To view the visual effects on Ubuntu:</title>
      <step performance="required">
        <para>On the 
        <emphasis role="strong">System</emphasis> menu, point to 
        <emphasis role="strong">Preferences</emphasis> and click 
        <emphasis role="strong">Appearance</emphasis>. The 
        <emphasis role="strong">Appearance
        Preferences</emphasis> dialogue box appears.</para>
        <figure float="0">
          <title>Opening the Appearance Preferences Dialogue
          Box</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_035.png" width="11cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
      <step performance="required">
        <para>In the 
        <emphasis role="strong">Appearance
        Preferences</emphasis> dialogue box, there are three
        pre-configured levels of special effects settings: No
        effects, Normal effects and Extra effects. You can select
        any one of them:</para>
        <figure float="0">
          <title>Configuring Visual Effects</title>
          <mediaobject>
            <imageobject>
              <imagedata fileref="images/Lesson03_images_036.png" width="8cm" format="PNG"/>
            </imageobject>
          </mediaobject>
        </figure>
      </step>
    </procedure>
    <para>If you want a simple desktop without any special effects,
    select 
    <emphasis role="strong">None</emphasis>. If you want a desktop
    with a balance of attractiveness and average performance,
    select 
    <emphasis role="strong">Normal</emphasis>. If you want various
    desktop effects, such as wobbly windows, desktop cube and many
    more, select 
    <emphasis role="strong">Extra</emphasis>. For example, while
    you are waiting for an update to complete or an e-mail client
    to import e-mail messages, you can turn on the Wobbly effect.
    The windows will start dancing and displaying the 3D effects.
    Play with it a little, it's fun!</para>
  </sect1>
  <sect1>
    <title>Desktop Search Tracker</title>
    <para>If you have a large number of documents stored on a
    high-capacity hard disk, it is difficult to search for a
    required document without using a search tool. Ubuntu uses the
    Desktop Search tool, which includes an indexing programme
    called 
    <emphasis role="strong">tracker</emphasis> to easily access
    specific files. To access this tool, on the 
    <emphasis role="strong">Applications</emphasis> menu, point to 
    <emphasis role="strong">Accessories</emphasis> and click 
    <emphasis role="strong">Tracker Search Tool</emphasis>. The 
    <emphasis role="strong">Tracker Search Tool</emphasis> window
    appears.</para>
    <figure float="0">
      <title>Launching Tracker Search Tool</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_037.png" width="14cm" format="PNG" />
        </imageobject>
      </mediaobject>
    </figure>
    <para>The tracker searches for important information in all the
    files in your home directory and compiles the search result
    into a huge database. So, if you are looking for all documents
    on the computer that contain a single word such as, 'music',
    tracker looks up all the files that contain the word 
    <emphasis role="italic">music</emphasis> and displays them in
    the search results.</para>
    <figure float="0">
      <title>Running a Search</title>
      <mediaobject>
        <imageobject>
          <imagedata fileref="images/Lesson03_images_038.png" width="11cm" format="PNG"/>
        </imageobject>
      </mediaobject>
    </figure>
  </sect1>
  <sect1>
    <title>Lesson Summary</title>
    <para>In this lesson, you learned that: 
    <itemizedlist>
      <listitem>
        <para>Ubuntu utilises the GNOME desktop by default</para>
      </listitem>
      <listitem>
        <para>You can set the default language of your computer
        either during the installation of Ubuntu or at a later
        stage</para>
      </listitem>
      <listitem>
        <para>Fast user switching enables you to share your
        computer with other users without sharing your files</para>
      </listitem>
      <listitem>
        <para>You can install software by using the Add/Remove
        application or the Synaptic Package Manager utility of
        Ubuntu</para>
      </listitem>
      <listitem>
        <para>Compiz Fusion is enabled by default on Ubuntu 7.10
        and provides fun, 3D desktop visual effects</para>
      </listitem>
      <listitem>
        <para>Ubuntu uses a Desktop Search tool, which includes an
        indexing programme called Tracker.</para>
      </listitem>
    </itemizedlist></para>
  </sect1>

  <sect1 role="questions">
    <title>Review Exercise</title>
    <qandaset>
      <qandaentry>
        <question>
          <para>At the top and bottom of the desktop, you have two
						bars, called _________________.</para>
        </question>
        <answer>
          <para>At the top and bottom of the desktop, you have two
          bars, called panels.</para>
        </answer>
      </qandaentry>
      <qandaentry>
        <question>
          <para>Which are the three shortcut icons already present
          on the top panel?</para>
        </question>
        <answer>
          <para>Mozilla Firefox, Evolution e-mail client and Ubuntu
          help.</para>
        </answer>
      </qandaentry>
      <qandaentry>
        <question>
          <para>What is fast user switching?</para>
        </question>
        <answer>
          <para>Fast user switching is a feature that avoids you
          having to log off and log on all the time to switch
					users. It enables multiple users to switch quickly while staying</para>
        </answer>
      </qandaentry>
      <qandaentry>
        <question>
          <para>Name the new search tool used in Ubuntu
          7.10.</para>
        </question>
        <answer>
          <para>The Tracker Search tool is the new search tool used
          in Ubuntu 7.10.</para>
        </answer>
      </qandaentry>
    </qandaset>
  </sect1>

  <sect1>
    <title>Lab Exercise</title>

    <formalpara>
      <title>Exercise:</title>
			<para>You have bank-related information on your computer and
				want to block others' access to it. Your friend wants to use
				your computer for some time. To handle this situation, create a
				new user account for your friend and use the fast user switch
    feature.</para>
    </formalpara>
    <orderedlist numeration="arabic" inheritnum="ignore" continuation="restarts">

      <listitem>
        <para>On the 
        <emphasis role="strong">System</emphasis> menu, point to 
        <emphasis role="strong">Administration</emphasis> and click 
        <emphasis role="strong">Users and Groups</emphasis>. The 
        <emphasis role="strong">User settings</emphasis> dialogue
        box opens.</para>
      </listitem>
      <listitem>
        <para>In the 
        <emphasis role="strong">User settings</emphasis> dialogue
        box, click 
        <emphasis role="strong">Add User.</emphasis> The 
        <emphasis role="strong">New user account</emphasis> dialogue
        box appears.</para>
      </listitem>
      <listitem>
        <procedure>
          <title>In the dialogue box, specify the following
          information:</title>
          <step performance="required">
            <para>Type charles in the 
            <emphasis role="strong">Username</emphasis> box.</para>
          </step>
          <step performance="required">
            <para>Select Desktop user from the 
            <emphasis role="strong">Profile</emphasis> box.</para>
            <substeps performance="required">
              <step performance="required">
                <para>Type charles windsor in the 
                <emphasis role="strong">Real
                name</emphasis> box.</para>
              </step>
              <step performance="required">
                <para>Type England in the 
                <emphasis role="strong">Office
                location</emphasis> box.</para>
              </step>
              <step performance="required">
                <para>Type 111111 in the 
                <emphasis role="strong">Work
                phone</emphasis> box.</para>
              </step>
              <step performance="required">
                <para>Type 99999 in the 
                <emphasis role="strong">Home
                phone</emphasis> box.</para>
              </step>
              <step performance="required">
                <para>Type password@1 in the 
                <emphasis role="strong">User
                password</emphasis> box.</para>
              </step>
              <step performance="required">
                <para>Click 
                <emphasis role="strong">Close</emphasis> to save the
                settings.</para>
              </step>
            </substeps>
          </step>
        </procedure>
      </listitem>
      <listitem>
        <para>Click the fast user switch icon on the top panel.
        Click charles. The logon screen appears.</para>
      </listitem>
      <listitem>
        <para>Type charles in the 
        <emphasis role="strong">Username</emphasis> box and
        password@1 in the 
        <emphasis role="strong">Password</emphasis> box.</para>
      </listitem>
      <listitem>
        <para>Your friend can now work on this desktop.</para>
      </listitem>
    </orderedlist>
    <para>Your friend cannot access your user account because the
    computer will ask for your password to log on to the account.
    So, your personal data is safe.</para>
  </sect1>
</chapter>