## Synopsis
-DragonFly uses X11 to provide users with a powerful graphical user interface. X11 is an open-source implementation of the X Window System that includes both **X.org** and **XFree86™** . DragonFly default official flavor is **X.org** , the X11 server developed by the X.Org Foundation. This chapter will cover the installation and configuration of X11 with emphasis on **X.org** . For more information on the video hardware that X11 supports, check either the [X.org](http://www.x.org/) or [XFree86](http://www.XFree86.org/) web sites.
+DragonFly uses X11 to provide users with a powerful graphical user interface. X11 is an open-source implementation of the X Window System that includes both **X.org** and **XFree86™** . DragonFly default official flavor is **X.org**. This chapter will cover the installation and configuration of X11. For more information on the video hardware that X11 supports, check either [X.org](http://www.x.org/) web site.
* Know how to install additional third-party software. Compare the pkgsrc chapter of the handbook.
-**Note:** This chapter covers the installation and the configuration of both **X.org** and **XFree86** X11 servers. For the most part, configuration files, commands and syntaxes are identical. In the case where there are differences, both **X.org** and **XFree86** syntaxes will be shown.
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-Instead, X delegates this responsibility to an application called a ***Window Manager***. There are dozens of window managers available for X: ***'After***Step***', **Blackbox** , **ctwm** , **Enlightenment** , **fvwm** , **Sawfish** , **twm** , **Window Maker** , and more. Each of these window managers provides a different look and feel; some of them support ***virtual desktops***; some of them allow customized keystrokes to manage the desktop; some have a ***Start*** button or similar device; some are ***themeable***, allowing a complete change of look-and-feel by applying a new theme. These window managers, and many more, are available in the `x11-wm` category of the Ports Collection.
+Instead, X delegates this responsibility to an application called a ***Window Manager***. There are dozens of window managers available for X: ***'After***Step***', **Blackbox** , **ctwm** , **Enlightenment** , **fvwm** , **Sawfish** , **twm** , **Window Maker** , and more. Each of these window managers provides a different look and feel; some of them support ***virtual desktops***; some of them allow customized keystrokes to manage the desktop; some have a ***Start*** button or similar device; some are ***themeable***, allowing a complete change of look-and-feel by applying a new theme. These window managers, and many more, are available in the `wm` category of the pkgsrc collection.