## Gnome Control Center Manual

2000, 2001
Red Hat, Inc. and Alexander Kirillov

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. You may obtain a copy of the GNU Free Documentation License from the Free Software Foundation by visiting their Web site or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

Many of the names used by companies to distinguish their products and services are claimed as trademarks. Where those names appear in any Gnome documentation, and those trademarks are made aware to the members of the Gnome Documentation Project, the names have been printed in caps or initial caps.

This manual describes version &version; of GNOME Control Center. It was last updated on May 16, 2001.

## The Gnome Control Center

The Gnome Control Center allows you to configure various parts of your system using a collection of tools called capplets. These capplets may be associated with the core set of Gnome applications or other applications for which the developers have written capplets.

Your Control Center may contain more capplets than are documented here depending on the applications installed on your system.

Control Center is a part of Gnome desktop environment; it is included in `control-center` package.

You may start the Control Center one of three ways. To launch the Control Center without any particular active capplet select the Control Center menu item from the Settings submenu in the Main Menu or type the command `gnomecc` at the command line prompt.

If you know which capplet you would like to edit you may start that capplet by selecting the correct menu item in the Settings menu.

## Using the Control Center

The Control Center is divided into two main sections, the menu of configurable capplets on the left and the main work space on the right. The capplets in the menu are grouped in sections, such as Desktop, Multimedia, etc. Each of these sections is discussed in detail below. As with all menus of this type, you can collapse a whole section by clicking on the small downward triangle to the left of the section title. To expand a collapsed section, click on the triangle again.

Working with the Control Center simply requires you to select a capplet from the menu on the left and click on it. Once this is done, the workspace will change, allowing you to configure the item.

After you have made the configuration changes, you can press OK button to confirm the changes or Cancel to return to the old configuration. It you want to test the new settings before making your decision press Try button; this will apply the new cofiguration settings so that you can see what they would look like, but it also remembers the old ones. After you have tried the new settings, you can press OK button to make them permanent, or Revert to return to the old configuration.

## Desktop

The Desktop section controls the most visible global settings for your Gnome environment.

### The Background Properties Capplet

The properties for your background image can be set here by either selecting a color or an image. If you select a color you have the option of having Solid, Horizontal Gradient (the color smoothly changes from left to right) and Vertical Gradient (the color changes from top to bottom). For gradient backgrounds, you need to select two colors: beginning (primary) and ending (secondary) one.

If you decide to have an image as wallpaper you may browse for the image you wish to use. Once you have found your image you need to decide whether you would like to have the image tiled across the screen, centered, scaled up while keeping the same aspect, or simply scaled up to fit the screen. Once you have changed your background properties you may press the Try button at the bottom of the Control Center to make the change.

If you would like to set the background by any other means you may disable this capplet by unselecting Use Gnome to set background checkbox.

#### The Background Properties Capplet

The Background Properties Capplet

### Global Panel Preferences

This capplet is provided by the Gnome Panel and is documented in the Panel Manual

### The Screensaver Capplet

In this capplet you can change your screensaver properties. This capplet contains a list of available screen savers you may choose and a demo screen. Below these two dialogs you will see a set of tools that allow you to change the settings for the global screen saver properties. If the screen saver you choose has particular settings you can change those by pressing the Settings button that appears below the screen saver list.

Global Screen Saver settings — In this section of the capplet you can change the time, password, and power management properties. You can decide how long you would like the screen saver to wait before starting by typing the number of minutes in the Start After text box. If you would like a password to return to your desktop click the Require Password button. Your account login password is the password set for the screen saver.

You are also given the option of using power management — if your monitor is capable of it. You may set the time to wait before the monitor is shut off by typing the time in the Shutdown monitor text box.

#### The Screensaver Properties Capplet

The Screensaver Properties Capplet

#### NOTE FOR ADVANCED USERS

Gnome (or, rather, xscreensaver program used by Gnome) overrides the power management (DPMS) settings you may have set by other means (such as explicit `xset` command). For example, if you have unselected Use power management option, then power management will be disabled, even if you had previously issued the command `xset +dpms`.

### Theme Selector

The Theme Selector capplet allows you to select which GTK theme you would like to run.

GTK themes are coordinated settings that define the look and feel of such elements of graphical user interface as buttons, menus, scrollbars etc. of all Gnome applications (more generally, of all applications using the GIMP Toolkit (GTK), hence the name).

To change your GTK theme select a theme from the Available Themes list on the left side of the main workspace. If you have Auto Preview selected you will be able to see what the theme looks like in the preview window below. Note that the preview window is live: you can click on a button, enter text in sample text entry box, etc. If you like the theme press the Try button on the bottom of the Gnome Control Center to install it.

There are a few GTK themes that come loaded with Gnome when you install it. If you would like more themes you can check resources on the Internet such as the GTK Themes site. Once you have found and downloaded a theme you like, press the Install new theme button. This will launch a file browser that allows you to find the theme you have just downloaded. The theme files should be in a `tar.gz` or `.tgz` format (otherwise known as a tarball). Once you have found the file press the OK and Gnome will install the theme in the appropriate directory (`~/.themes`) automatically. Now you can look in the Available Themes list for the theme you have installed.

#### The Theme Selector Capplet

The Theme Selector Capplet

If you would like to change the font used in the current theme, you may do so by selecting the Use custom font checkbox and clicking on the font button below it. This will bring up a font selection dialog that allows you to specify the font, its style, and size.

### Window Manager Capplet

Because Gnome is not dependent on any one window manager this capplet allows you to select which window manager you wish to use. The Window Manager capplet only shows Gnome-compliant window managers; if you want to use other window managers, you have to tell Window Manager capplet about them.

#### Window Manager Capplet

Window Manager Capplet

The Window Manager capplet has a main list of the window managers that you can currently select from. Your current window manager will be labeled Current.

If you wish to add a new window manager to the main list you may press the Add button. This will launch the Add New Window Manager dialog.

#### Add New Window Manager

Add New Window Manager

In the Add New Window Manager dialog you may specify the name you wish to give the window manager, the command to launch that window manager, and the command to launch any configuration tool that might be available for that window manager.

If you know that the window manager is fully Gnome compliant and can be session managed you may select the Window manager is session managed button. If you are unsure you should check the documentation of your window manager.

Press OK when you are done.

Once you have finished adding your new window manager you will see it appear in the main list of window managers. If you need to change any of the properties you set in the Add New Window Manager dialog you may select the window manager from the main list with your mouse and press the Edit button.

You may also delete any window manager in the main list by selecting it with your mouse and pressing the Delete button.

If you are ready to switch the current window manager you may select the manager you wish to run from the main list and press the Try button. If you would like to run the configuration tool, make sure the manager you want to configure is selected and press the Run Configuration Tool for [window manager name] button.

## Document Handlers

The Document Handlers section of the Gnome Control Center allows you to change the way certain file types and functions are viewed, edited or manipulated.

### Default Editor

The Default Editor Capplet allows you to select which editor will be your default editor while using Gnome. This will allow applications like the Gnome File Manager to launch the correct editor when you try to open files associated with editing. All popular editors available are included in the selection list.

#### The Default Editor Capplet

The Gnome Edit Properties

### File types and programs

This section allows you to configure how files of various types should be handled. File type (formally called MIME type) describes what kind of data and in what format the file contains. For each of the file types, you can set the icon to be used by the File Manager, the default application to be used to open files of this type, etc. For example, file type image/jpeg is used for image files in `JPEG` format; by default, it is opened using File Manager's built-in graphics viewer.

#### Viewing available file types

The File types capplet shows you all file types currently known to Gnome. For each file type, it shows a short description (e.g., `PDF document`), the file type name (e.g., `application/pdf`), etc. Clicking on a file type in the list shows you more information about this gile type, namely:

- Brief description (e.g., PDF document)

- Official file type name, or the MIME type (e.g., application/pdf). These names should be of the form type/subtype, where type describes general type of data (image, text, audio, video, or application) and subtype gives complete specification.

- Icon to be used for files of this type by File Manager.

- Default action to be performed when you click on the file in the File Manager window. There are two possible types of default actions: view the file using one of File Manager built-in viewers or open the file using an external application. In fact, you can have a whole list of applications that can be used to open the file. One of these applications is used by default when you click on file; the other applications will be included in the pop-up menu for files of this type (to get the pop-up menu, click on the file with the right mouse button in the File Manager window and select Open With).

- Extensions: these are used by File Manager and other Gnome applications to determine file type of a given file. The most common and simplest way of doing this is by matching the filename extension: for example, extension `pdf` is used for files of type application/pdf.

##### NOTE FOR ADVANCED USERS

In fact, Gnome File Manager first tries to determine file type by looking at its content; only if it can't figure out the file type from the content, it will use extension. Thus, if you have a file which contains a JPEG image, Gnome File Manager will correclty identify this file's type as image/jpeg, even if the file name has no extension at all or has extension `pdf`.

#### Editing a file type

By far the most common type of editing a file type is changing the default action associated with a given file type. To do so:

1. Click on the file type in the list.

2. Select the type of default action (Use Viewer or Open with Application)

3. Select the application/viewer you want to be the default from the drop-down list. If you don't see an application you want in this list, click on the Edit List button. It will show you the list of all application which are currently included in the pop-up menu for this file type. Now click on Add application button and enter the application name (e.g., Gnome PS viewer) and command used to launch this application (e.g., `ggv`).

You can also change other properties of a file type:

- To change the icon used by a file type, click on the Change icon button.

- To change file type description, just click inside the text field containing description and edit it.

- To edit the list of extensions associated with a file type, click on the Change file extensions button. This will produce a window showing the list of file extensions currently associated with this file type. To remove an extension from the list, select it with the mouse and then click Remove button. To add a new extension, click on Add button and enter the new extension in the appearing dialog. Do not type the leading dot: if you want to add extension `pdf`, you should type in `pdf`, not `.pdf`.

- To edit the list of applications associated with the file type (these applications appear in the menu when you right-click on the file of this type in the File Manager and select Open with), click on the Edit List button. This will show the list of all applications associated with this file type. You can remove any of the applications from the list, edit an existing application (this allows you to change the name under which this application appears in the menu and the command used to launch this application), or add a new application. Instead of removing of application from the list, you can also temporarily disable it by unchecking it in the list. Such a disabled application will not be shown in the menu for the files of this type.

#### Adding and deleting file types

To delete a file type, select it in the file type list and press Delete this Mime type button. To add a new file type, press Add new Mime type button. You will be prompted to enter the file type name and description. It is strongly advised that you follow the MIME standard: file type name should be of the form type/subtype, where type is one of the following five standard types: text, audio,image, video, or application (the last one should be used if none of the first four are suitable).

After you have entered the file type name and description, the new file type is added to the list. Now you can select it in the list and choose an icon, file extensions and default action for this file type as described in .

#### Restoring system defaults

If you (or someone else) did something wrong in this capplet, you can discard all your changes and restore the system default values for all the settings controlled by this capplet (i.e., file types, default actions, icons, etc). To do so, click on Revert to system defaults button. Note that this will erase all your changes; you can not "undo" this action.

### URL Handlers

The URL Handlers Capplet allows you to determine which browser is responsible for various types of URLs. URLs or Uniform Resource Locators are addresses used to find certain documents or files. When you type in a web address in a browser you are using a URL. The default types of URLs are:

Default

  Default — this is any URL that is not otherwise specified. For example, a web page.

ghelp

  This type of URLs is used for all Gnome documentation. By default this is handled by Nautilus (Gnome file manager and help browser) but you may wish to view the files in another browser.

info

  This type of URLs is used for documentation in info format file documentation system. Nautilus can show these documents but you may wish to handle them with another application.

man

  This type of URLs is used for so-called man pages, a standard documentation format for command line tools. Nautilus can view these documents but you may wish to handle them with another application.

To change the default browser for any of these URL types simply change the browser in the handler text box at the top of the Capplet and press the Set button. If you wish to remove the URL handler press the Remove button.

#### The URL Handlers Capplet

The URL Handler

## Launch feedback

This capplet allows you configure application launch feedback, i.e. indicators which tell you that a program is being loaded. Such indicators, which can take a number of forms (i.e., an hourglass icon next to mouse cursor or a blinking star) come to life the moment you click on the application launch button or select it in the menu and stay on until the application actually starts or until specified time has passed. These indicators can be very useful in cases when an application takes a long time to start: without them, you would never know whether the application is just taking a long time to start, or something went wrong (e.g., it has crashed at startup, or you maybe you didn't click on that button at all).

### The Launch Feedback capplet

The Launch Feedback capplet

### Enabled indicators

In this section, you can select what launch indicators should be enabled. You can select more than one; you can also disable all of them if you want to.

Tasklist (invisible window)

  This is the default selection. This option adds to the list of windows in your taskbar the window with the name of the application being started and with hourglass icon next to it. (This will only work if your taskbar is configured to show normal. i.e. non-iconified applications.)

Hourglass mouse cursor

  This option will put an hourglass icon next to the mouse cursor. It doesn't affect mouse opertaions: you can still use the mouse for clicking and dragging.

Splashscreen

  This option puts a small window saying Starting (Application Name) in the middle of your screen

Animated star

  This option put a small yellow blinking star in the upper left corner of your screen.

### Miscellaneous

Timeout

  This parameter specifies maximal time the indicators can be on; after this, the indicators will disappear even if the application has not yet started.

Do not distinguish between windows (compatibility mode)

  This option controls the behavior of the indicators when you are launching several applications simultaneosly (or in quick succession). Since this is not a very common situation, new users may skip this section.

  If this section is disabled (which is the default), the indicators will track each of the applications you are launching separately, and the indicators will stay on until all the applications have started. This is the right thing to do. Unfortunately, in some (rare) cases it can also cause problems, sometimes even leading to system crash. In such situations, you should enable this option.

  If this option is enabled, the indicators will work in a more primitive (but safer) way. Namely, they will go away as soon as the first of the applications you are launching starts.

## Look and Feel

The Look and Feel capplet allows you to change the appearance of applications that are Gnome compliant. You may recognize these applications as ones that are pre-installed with Gnome or ones that say they are built with GTK (the GIMP Toolkit).

### Applications

The Applications capplet allows you to change certain user interface aspects of your Gnome compliant applications.

#### IMPORTANT

Although this capplet gives you great control over the look and feel of your applications you should consider these tools for advanced use only.

- Can detach and move menubars — By default menubars in Gnome applications may be dragged from their usual location and placed anywhere within the application or desktop. If you do not wish to use this feature you may turn it off.

- Menus have relieved borders — By default menubars have relieved borders. If you do not like this look you may turn this feature off.

- Submenus can be torn off — This allows the submenus to have the perforated line which allows you to "tear" them off an have them as a small movable window.

- Menu items have icons — Some menu items in applications will have icons. If you wish not to see these icons in applications that use them you may turn off this feature.

- Statusbar is interactive when possible — Some applications can have the status bar at the bottom become separated into its own window. If you would like to have those applications separate the status bar into another window you may turn on this option.

- Statusbar progress meter on right — Some applications have progress meters in their statusbars. By default these progress meters are on the right side of the statusbar. If you wish them to be on the left you may turn off this feature.

- Can detach and move toolbars — By default toolbars in Gnome applications may be dragged from their usual location and placed anywhere within the application or desktop. If you do not wish to use this feature, you may turn it off.

- Toolbars have relieved border — By default toolbars have relieved borders. If you do not like this look you may turn this feature off.

- Toolbar buttons have relieved border — By default toolbar buttons do not have relieved borders in their natural state. They do, however, change when the mouse is over them. If you wish them to be relieved at all times you may turn on this feature.

- Toolbars have line separators — By default toolbar buttons have small line separators between them. If you do not wish to have the line separators you may turn this feature off.

- Toolbars have text labels — By default toolbar buttons have images and text to identify them. If you are familiar with the buttons and do not need the text you may turn on this feature.

#### Applications Defaults Capplet

Dialog Capplet
<sect2 id="gccdialogs" <title>Dialogs

The Dialogs Capplet will allow you to change the default settings for dialog boxes in Gnome compliant applications. A dialog box is a window that is launched by an application to help perform a task needed by that application. An example of a dialog box is a Print dialog which appears when you press a print button. The dialog allows you to set print options and start the print process. The Dialogs capplet will allow you to change the following options.

### IMPORTANT

Although this capplet gives you great control over the look and feel of your applications you should consider these tools for advanced use only.

Dialog buttons — Choose to use the default buttons, buttons more spread out, put buttons on the edges, put the buttons on the left with left-justify, and put buttons on the right with right-justify.

Dialog buttons have icons — Some dialog buttons (for example OK) can have icons on them. By default the applications which provide this have the icons turned on. If you wish not to see them you may turn off this feature.

Use statusbar instead of dialog when possible — You may tell applications to use the statusbar instead of a dialog if the application will allow it. This will only work with dialogs that provide information not one that require some interaction on your part.

Dialog position — This will let you choose how the dialogs appear when launched. You can let the window manager decide for you (or how you have defined it in the window manager configuration), center the dialogs on the screen, or drop them where the mouse pointer is when they are launched.

Dialog hints — This will let you change the behavior of the dialog hints which are the tooltips that appear when you move your mouse button over a button or part of the dialog. You may choose to have hints handled like other windows, or let the window manager decide how to display them.

Place dialogs over application window when possible — You may choose to place dialog over the applications when possible which will help you keep your windows organized on your screen If you are familiar with other operating systems you may wish to keep this selected as this is how most operating systems handle dialogs.

### Dialog Capplet

Dialog Capplet

### MDI

The MDI capplet allows you to change the Multiple Document Interface (MDI) mode for Gnome applications, i.e. the mode of showing more than one document.

Possible MDI styles are:

Toplevel

  Each document is shown in a separate application window; when you open a new document, a new window is created.

Notebook

  In this mode, you have only one application window which contains all documents much like your (paper) notebook contains many leaves: each leaf has a tab, and clicking on the tab brings this leaf on top. This is the default mode.

Modal

  In this mode, you have only one application window, and it only shows one document at a time. To switch to another document, you must use a menu command or keyboard shortcut. If you have ever used Emacs, Modal is very similar to the way Emacs handles buffers.

If you have selected Notebook as your MDI style, you can also set MDI notebook tab position. Possible choices are at the top, left, right, or bottom of your application.

#### NOTE

Please keep in mind that these changes only affect Gnome (or, to be more precise, GTK) applications. In addition, many Gnome applications set their own MDI mode rather than use the mode specified in this capplet. For example, Gnumeric always uses Toplevel mode, while gedit allows you to select Default mode (in which case the mode set in this capplet will be used), or override it by explicitly setting one of three modes listed above.

#### MDI Capplet

MDI Capplet

## Multimedia

The Multimedia capplet provides control over sound and other Gnome multimedia functions.

### Sound

The Sound capplet allows you to set the system sounds for your Gnome session. It contains two tabs, General and Sound Events.

General Tab - At this point you have two options to choose from in the General tab, enabling sound for Gnome and for events. If you select Enable sound server startup you will make sure that Gnome's sound engine (ESD) will be launched when you start Gnome. ESD is used by all Gnome applications that produce sound, so if you want to hear any sound from Gnome applications you should enable this option.

#### NOTE

Some non-Gnome applications do not work well with ESD. So if you do not hear any sounds from your favorite xgalaga game or get error messages like `Device /dev/dsp busy`, you should temporarily suspend ESD. You can do this using Sound Monitor applet.

Sound for events will enable sounds accompanying various "events", such as closing a window or an error message. You can select sounds associted with various events in the Sound Events tab when those events occur. With these two items enabled, Gnome will remember your sound settings whenever you log in or out.

#### The Gnome Sound Capplet

The Gnome Sound Capplet

Sound Events Tab - This tab allows you to control the sounds made by various programs and events in Gnome.

To change the sound associated with a Gnome event, select the event from the hierarchical list on the left and press the Browse button to find a sound file on your system (file must be in `wav` format). Press the Play button to test the sound.

#### The Gnome Sound Capplet

The Gnome Sound Capplet

## Peripherals

The capplets in this section of the Control Center will help you configure devices such as keyboard and mouse. You may also have other peripheral devices that have capplets provided for the Gnome Control Center. Please refer to the documentation provided by any other peripheral capplet you might have.

### The Keyboard Properties Capplet

There are currently three settings for the keyboard in this capplet. You may change the properties of Auto-repeat, the Keyboard Click, and the Keyboard Bell.

Auto-repeat enables you to hold a key down and have it repeat the character at the rate and delay you set in this capplet.

Keyboard Click enables a small click sound to play at each key press. If enabled you may change the volume to your preference.

The Keyboard Bell section allows you to change the bell sound that is produced by your CPU speaker when a keyboard error or message is sent.

Volume changes the actual volume of the bell.

The pitch slider will change the pitch of the note that is played. By default it is set to 440Hz, or the A above middle C.

Duration changes the length of time the tone is played.

The Test button will allow you to hear the current settings of your keyboard bell.

#### The Keyboard Properties Capplet

The Keyboard Properties Capplet

### The Mouse Properties Capplet

The Mouse Properties capplet allows you to change between left and right handed mouse buttons and to define the Accelerations and Threshold properties.

The Accelerations setting allows you to change the speed the mouse moves across the screen in relation to the movement of the mouse on your mouse pad. The Threshold setting allows you to set the speed at which you have to move your mouse before it starts the acceleration speed you have defined in the Acceleration setting.

#### The Mouse Properties Capplet

The Mouse Properties Capplet

## Session

The Session Group provides you methods of controlling various items that occur with the startup of your Gnome Session. These include session options, startup programs and startup hints.

### Startup Hints

Startup hint are short messages displayed when you login; they contain tips on using Gnome and other bits of information you may find useful. This capplet allows you to configure these hints.

The Enable login hints checkbox allows you to turn this feature on or off.

The Display normal hints checkbox will display a group of hints on how to use Gnome. This is a good choice for new users of Gnome.

The Display fortunes instead of hints checkbox allows you to make use of the fortune application which displays various fortunes and sayings. Please refer to the fortune documentation for how to set it up.

The Display message of the day instead of hints checkbox will message of the day to be displayed instead of hints or fortunes. The Message of the day file to use text box allows you to select the text file that will be used as the message. This is a good choice for system administrators to use to inform many users of daily news.

#### Startup Hints Capplet

Startup Hints Capplet

### Session Options and Startup Programs

The Session Options and Startup Programs capplet allows you to control what programs are started at login time. Gnome has the concept of session management. In simple terms, it means that you can save your session (that is, information about currently working applications, their status and position on the screen) at any stage, and at your next login the same applications will reappear on your screen in the same positions, allowing you to continue your work. Note, however, this only works for Gnome compliant applications.

Gnome also provides another way of starting applications at login. You can explicitly specify one or more commands to run, and Gnome will execute them at login in addition to the applications from your saved session. This works for all kinds of applications, whether Gnome compliant or not.

Session Options and Startup Programs capplet allows you to configure all of these options, as described below.

#### Session Options Capplet

Session Options Capplet

Show splash screen on login

  This option controls whether the splash screen should be shown at startup. It does nothing useful, but is an eye candy, so why not?

Prompt on logout

  If this option is enabled, a confirmation dialog will appear at logout. Among other things, this dialog provides checkbox Save current setup (unless you have set the checkbox Automatically save session, see below). If you check this box, the current session will be saved and will be restored at your next login. Otherwise, the previous saved session will be used.

Automatically save session

  This option determines whether your current session will be automatically saved at logout time or not. Note that you can also manually save your session at any time by selecting Settings Session Save Current Session from the Main Menu.

Choose Current Session

  This section allows you to configure more complicated features of session management. These features are currently being developed and should be used by advanced users only.

  Gnome allows you to define several sessions. For example, you could have session Work in which you are using office applications such as Gnumeric spreadsheet, and another session Net in which you have Netscape, X-Chat (IRC chat client) and Evolution mail client open. This way, you can keep the setups (i.e., information about open applications and their position on screen) for work and for net surfing separate, making it easy to switch from one to another. Unfortunately, at the moment the only way to switch from one session to another is by using command `gnome-session `--choose-session=SESSIONNAME``. In the future, an easier way of switching will be provided.

  In this part of Session Properties capplet you can explicitly specify under which session name you current setup should be saved, but a save won't occur until you specifically do so. Here, you can also create new sessions, edit and delete existing sessions.

  To add a new session, press the Add button and enter in a new session name. This name must be different from existing session names.

  To edit an existing session name, highlight the session name you wish to edit, press the Edit button and edit the existing session name. The new name must be different from existing session names.

  To delete an existing session name, highlight the session name you wish to delete, press the Delete button.

#### Startup Programs Capplet

Startup Programs Capplet

- Non-session managed startup programs — In this section, you can explicitly specify the commands that should be executed during login. This is mostly used for programs that are not Gnome-compatible. For Gnome applications, it is easier just to leave them running and then save your session at logout — this will ensure that they will be restarted at your next login.

  To add a new command, press Add button and enter the command to run in the appearing dialog window. For example, if you want Netscape to start every time you login, just enter `netscape` in the Startup command field.

  You can also specify priority, which determines the order in which the programs will be started: programs with lower values are started before the ones with higher values. The default value is 50, which means that the program will be started after all core Gnome components. Unless you know what you are doing, it is better to use this default value.

  You can also edit or remove previously entered programs using Edit... and Remove... buttons.

- Browse currently running programs — This button will launch Session properties dialog which shows the state of your current Gnome session — in other words, which programs are currently running, their status, priorities, and more. It can also be used to remove one of the core Gnome programs, such as Panel, from your session, thus making sure that it won't be started next time you login.

#### Session Properties Manager

Screenshot of the session properties manager.

## Authors

Gnome Control Center was written by Jonathan Blandford (jrb@redhat.com). Please send all comments, suggestions, and bug reports to the Gnome bug tracking database. (Instructions for submitting bug reports can be found on-line.) You can also use Bug Report Tool (`bug-buddy`), available in the Utilities submenu of Main Menu, for submitting bug reports.

This manual was written by Dave Mason (dcm@redhat.com) and Alexander Kirillov (kirillov@math.sunsyb.edu) with some help from other members of Gnome Documentation Project. Please send all comments and suggestions regarding this manual to the Gnome Documentation Project by sending an email to docs@gnome.org. You can also add your comments online by using the Gnome Documentation Status Table.

## License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

A copy of the GNU General Public License is included as an appendix to the Gnome Users Guide. You may also obtain a copy of the GNU General Public License from the Free Software Foundation by visiting their Web site or by writing to

        Free Software Foundation, Inc.
        59 Temple Place - Suite 330
        Boston, MA 02111-1307
        USA