~ricardo-cropalato/ubuntu-desktop-course/ubuntu-desktop-course-pt-br-ricardo-cropalato

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<chapter>
		<title>Exploring the Ubuntu Desktop</title>
		<para><emphasis role="strong">Objectives</emphasis></para>
		<para>In this lesson, you will learn:
			<itemizedlist>
				<listitem><para>About the GNOME desktop
				components and how this relates to Ubuntu</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>About adding and removing application</para></listitem>
				<listitem><para>3D Desktop effects</para></listitem>
				<listitem><para>About the desktop search tracker</para></listitem>
			</itemizedlist>
			<instructornote><title>Instructor Notes:</title><para><emphasis role="italic">All the topics in this 
			lesson are mandatory. Therefore, you need to cover all of them within the specified time limits. To 
			familiarise the students with the basic features of the new desktop, this lesson should primarily be a 
			hands on session.</emphasis></para>
			</instructornote>
		</para>
		<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>
			<para><emphasis role="strong">GNOME</emphasis></para>
			<instructornote>
				<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>
			</instructornote>
			<para>The GNOME desktop is the default desktop of Ubuntu 7.10. 
			GNOME (GNU Network Object Model Environment) is an international effort 
				to build a complete desktop environment&#8212;the graphical user interface, which sits on top of a computer operating system&#8212;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>
			<pdfpagebreak/>
			<para><emphasis role="strong">Key Desktop Components on Ubuntu 7.10</emphasis></para>
			<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. Unlike other OSs, Ubuntu comes with a completely clean desktop background, free of icons by default.</para>
			<instructornote>
				<title>Instructor Notes:</title><para><emphasis role="italic">Ensure that you browse through each element very quickly because more details will be covered in the subsequent lessons.</emphasis></para>
			</instructornote>
			<figure id="fig:desktop"><title><emphasis role="italic">Default Ubuntu Desktop</emphasis></title>
			<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_001.png" 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
			displays its icon on the desktop to allow easy access to the device.</para>
			<figure><title><emphasis role="italic">Desktop Icons</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_002.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<pdfpagebreak/>
			<para>At the top and bottom of the desktop are two bars, called panels.</para>
			<figure><title><emphasis role="italic">Desktop Panels</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_003.png" 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><para><emphasis role="strong">Applications:</emphasis> This
					menu contains all the applications installed on your computer such as
					games, music players, Web browsers and e-mail clients.</para>
					<figure><title><emphasis role="italic">The Application Menu</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_004.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<pdfpagebreak />
					<listitem><para><emphasis role="strong">Places:</emphasis> This menu
					allows you to access your home directory, external devices and network
					on your computer.</para>
					<figure><title><emphasis role="italic">The Places Menu</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_005.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					<note><title><emphasis role="strong">Note:</emphasis></title>
						<para>Home directory is created by default for every user and automatically takes the username. 
										This directory 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><para><emphasis role="strong">System:</emphasis> This menu
					allows you to change the settings of your computer. You can also access
					the Ubuntu help system and turn off your computer by using this menu.</para>
					<figure><title><emphasis role="italic">The System Menu</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_006.png" 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><title><emphasis role="italic">The Shortcut Icons</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_007.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<pdfpagebreak/>
			<para>To add a new shortcut icon to the desktop panel:
				<orderedlist numeration="arabic">
					<listitem><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><title><emphasis role="italic">Adding a Shortcut Icon</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_008.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><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 programs available on the
					<emphasis role="strong">Applications</emphasis> menu, click
					<emphasis role="strong">Application Launcher</emphasis>.</para>
					<note><title><emphasis role="strong">Note:</emphasis></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><title><emphasis role="italic">Adding Application Launchers</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_009.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<pdfpagebreak/>
					<listitem><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><title><emphasis role="italic">Selecting Applications</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_010.png" 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><title><emphasis role="italic">Adding Application Launchers</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_011.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
				</orderedlist>
			</para>
			<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><title><emphasis role="italic">Moving Shortcut Icons</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_012.png" 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><emphasis role="strong">Note:</emphasis></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><title><emphasis role="italic">The Fast User Switch Icon</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_013.png" 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><title><emphasis role="italic">The Search Tool</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_014.png" 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. You can change the date in the calendar.</para>
			<pdfpagebreak/>
			<para>The last icon on the top panel shuts down, restarts, hibernates and locks your
			computer and puts it on standby.</para>
			<figure><title><emphasis role="italic">Top Panel Icons</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_015.png" 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><title><emphasis role="italic">Show the Desktop</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_016.png" 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><title><emphasis role="italic">Open Applications</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_017.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<pdfpagebreak/>
			<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><title><emphasis role="italic">The Workspace Icon</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_018.png" 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><title><emphasis role="italic">Switching Workspaces</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_019.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<pdfpagebreak/>
			<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><title><emphasis role="italic">Splitting Windows into Workspaces</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_020.png" 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><title><emphasis role="italic">Creating New Workspaces</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_021.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<pdfpagebreak/>
			<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><title><emphasis role="italic">Workspace Switcher Preferences</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_022.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<para>Now, 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>, which is similar to the Recycle Bin of Microsoft Windows. It contains the files
			you deleted on your computer. Right-click the icon and click
			<emphasis role="strong">Open</emphasis> to open the <emphasis role="strong">Trash
			</emphasis> window.</para>
			<figure><title><emphasis role="italic">The Waste Basket Icon</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_023.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
			<para>You can delete an item permanently from the computer by pressing the
			DELETE key.</para>
			<note><title><emphasis role="strong">Note:</emphasis></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>
			<pdfpagebreak/>
			<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><title><emphasis role="italic">Deleting Items from Trash</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_024.png" 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>
			<para>To change the default language at a later stage:
				<orderedlist numeration="arabic">
					<listitem><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><title><emphasis role="italic">Configuring Language Support</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_025.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><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><title><emphasis role="italic">Installing Language Support Updates</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_026.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><para>In the <emphasis role="strong">Language Support</emphasis>
					dialogue box, from the <emphasis role="strong">Supported Languages</emphasis>
					section, which lists the languages that Ubuntu supports, select the check box
					for the language you want to use for support functions in Ubuntu.</para>
					<figure><title><emphasis role="italic">Installing Default Language Support</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_027.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><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></listitem>
					<listitem><para>Select the language that you want set as default, and click
					<emphasis role="strong">OK</emphasis>.</para></listitem>
					<listitem><para>For the changes to take effect, log off and then log on
					again.</para></listitem>
				</orderedlist>
			</para>
			<note><title><emphasis role="strong">Nice to Know:</emphasis></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>
			<instructornote><title>Instructor Notes:</title><para><emphasis role="italic">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.</emphasis></para>
			</instructornote>
			<para>You might 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 -- this prevents then from changing other people's settings.</para>
			<para>To create a new user account on Ubuntu:
				<orderedlist numeration="arabic">
					<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 appears.</para>
					<figure><title><emphasis role="italic">Adding/Removing Users</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_028.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><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><title><emphasis role="italic">Adding a User</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_029.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><para>Specify the user accounts' basic settings, contact information
					and password information in the <emphasis role="strong">New user account
					</emphasis> dialogue box.</para>
						<orderedlist numeration="loweralpha">
							<listitem><para>Type the name with which you want to log on to your
							computer in the <emphasis role="strong">Username</emphasis> box.</para></listitem>
							<listitem><para>Type your full name in the <emphasis role="strong">Real
							name</emphasis> box.</para></listitem>
							<listitem><para>Select your user type from the <emphasis role="strong">Profile</emphasis> box.</para></listitem>
							<listitem><para>Type your office location in the <emphasis role="strong">Office
							location</emphasis> box.</para></listitem>
							<listitem><para>Type your work phone number in the <emphasis role="strong">Work
							phone</emphasis> box.</para></listitem>
							<listitem><para>Type your home phone number in the <emphasis role="strong">Home
							phone</emphasis> box.</para></listitem>
							<listitem><para>Type the password for your user account in the
							<emphasis role="strong">User password</emphasis> box.</para></listitem>
						</orderedlist>
					<note><title><emphasis role="strong">Note:</emphasis></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><title><emphasis role="italic">Configuring New User Account</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_030.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><para>A new user account will be displayed in the User settings
					dialogue box. This dialogue box informs you about the full name and the
					logon name of the new user. It also tells you the location of the new user
					account created.</para>
					<figure><title><emphasis role="italic">The New User Account</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_031.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
				</orderedlist>
			</para>
			<pdfpagebreak/>
			<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><title><emphasis role="italic">Switching Users</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_032.png" 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>
			<instructornote><title>Instructor Notes:</title><para><emphasis role="italic">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.</emphasis></para>
			<para><emphasis role="italic">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.</emphasis></para>
			</instructornote>
			<para>Use the Add/Remove applications when you need to:
				<itemizedlist>
					<listitem><para>Use software other than the default applications
					on Ubuntu.</para></listitem>
					<listitem><para>Try an alternative application to the one already
					installed on Ubuntu.</para></listitem>
				</itemizedlist>
			</para>
			<pdfpagebreak/>
			<para>Ubuntu contains preloaded 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><title><emphasis role="italic">Launching Add/Remove Applications</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_033.png" 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><title><emphasis role="italic">Launching Synaptic Package Manager</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_034.png" 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. Synaptic searches all software in the available repositories on
			Ubuntu, including the ones that do not contain programmes.</para>
		</sect1>
		<sect1>
			<title>Desktop Effects - Compiz Fusion</title>
			<instructornote><title>Instructor Notes:</title><para><emphasis role="italic">Advise students that to view desktop effects, computers must have a 3D-enabled graphic card.</emphasis></para>
			</instructornote>
			<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 allows 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. 
			To view the visual effects on Ubuntu:
				<orderedlist numeration="arabic">
					<listitem><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><title><emphasis role="italic">Opening the Appearance Preferences Dialogue Box</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_035.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
					<listitem><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><title><emphasis role="italic">Configuring Visual Effects</emphasis></title>
						<mediaobject><imageobject>
							<imagedata fileref="images/Lesson03_images_036.png" format="PNG" />
						</imageobject></mediaobject>
					</figure>
					</listitem>
				</orderedlist>
			</para>
			<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
			7.10 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><title><emphasis role="italic">Launching Tracker Search Tool</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_037.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
				<pdfpagebreak/>

				<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><title><emphasis role="italic">Running a Search</emphasis></title>
				<mediaobject><imageobject>
					<imagedata fileref="images/Lesson03_images_038.png" format="PNG" />
				</imageobject></mediaobject>
			</figure>
		</sect1>
		<sect1>
			<title>Lesson Summary</title>
			<para>In this lesson, you learned that:
				<itemizedlist>
					<listitem><para>Ubuntu 7.10 uses the GNOME desktop by default.</para></listitem>
					<listitem><para>The desktop has two panels, top and bottom. Each panel
					contains various icons.</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 allows 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. It provides
					fun, 3-D desktop visual effects.</para></listitem>
					<listitem><para>Ubuntu 7.10 uses a Desktop Search tool, which includes an
					indexing programme called Tracker to easily access specific files.</para></listitem>
				</itemizedlist>
			</para>
		</sect1>
		    <questions>
		<sect1>
			<title>Review Exercise</title>
			<para><emphasis role="strong">Question 1</emphasis></para>
			<para>At the top and bottom of the desktop, you have two bars, called _______.</para>
			<answer>
			<para><emphasis role="strong">Answer 1</emphasis></para>
			<para>At the top and bottom of the desktop, you have two bars, called panels.</para>
			</answer>
			<para><emphasis role="strong">Question 2</emphasis></para>
			<para>Which are the three shortcut icons already present on the top panel?</para>
			<answer>
			<para><emphasis role="strong">Answer 2</emphasis></para>
			<para>Mozilla Firefox, Evolution e-mail client and Ubuntu help.</para>
			</answer>
			<para><emphasis role="strong">Question 3</emphasis></para>
			<para>What is fast user switching?</para>
			<answer>
			<para><emphasis role="strong">Answer 3</emphasis></para>
			<para>Fast user switching is a feature that avoids you having to log off and
			log on all the time to switch users. It allows multiple users to switch
			quickly while staying logged on.</para>
			</answer>
			<para><emphasis role="strong">Question 4</emphasis></para>
			<para>Name the new search tool used in Ubuntu 7.10.</para>
			<answer>
			<para><emphasis role="strong">Answer 4</emphasis></para>
			<para>The Tracker Search tool is the new search tool used in Ubuntu 7.10.</para>
			</answer>
		</sect1>
		    </questions>
		<sect1>
			<title>Lab Exercise</title>
			<para><emphasis role="strong">Exercise:</emphasis></para>
			<para>You have bank-related information on your computer and want no one else
			to access 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>
			<orderedlist numeration="arabic">
				<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><para>In the <emphasis role="strong">New user account</emphasis>
				dialogue box, specify the following information:</para>
					<orderedlist numeration="loweralpha">
						<listitem><para>Type charles in the <emphasis role="strong">Username</emphasis>
						box.</para></listitem>
						<listitem><para>Select Desktop user from the <emphasis role="strong">Profile
						</emphasis> box.</para>
							<orderedlist numeration="arabic">
								<listitem><para>Type charles windsor in the <emphasis role="strong">Real
								name</emphasis> box.</para></listitem>
								<listitem><para>Type England in the <emphasis role="strong">Office
								location</emphasis> box.</para></listitem>
								<listitem><para>Type 111111 in the <emphasis role="strong">Work
								phone</emphasis> box.</para></listitem>
								<listitem><para>Type 99999 in the <emphasis role="strong">Home
								phone</emphasis> box.</para></listitem>
								<listitem><para>Type password@1 in the <emphasis role="strong">User
								password</emphasis> box.</para></listitem>
								<listitem><para>Click <emphasis role="strong">Close</emphasis> to
								save the settings.</para></listitem>
							</orderedlist>
						</listitem>
					</orderedlist>
				</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>