Glossary: Difference between revisions

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    {{Template:I18n/Language Navigation Bar|Glossary}}
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    [[Welcome_to_KDE_UserBase|Home]] >> [[An_introduction_to_KDE|Introduction]] >> [[Glossary|Glossary]]


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    <!--T:2-->
    This page sets out to provide a non-technical reference, together with links for further information or demonstration.
    This page sets out to provide a non-technical reference, together with links for further information or demonstration. See also [[Special:myLanguage/Jargon File|Jargon File]].


    ==A General Overview== <!--T:3-->
    ==A General Overview== <!--T:3-->
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    The following glossary is intended to help you find your way through the mists of new names and new concepts.  In some cases you can find a link from a '''KDE 3''' component to its equivalent in the context of '''KDE SC 4''' software.
    The following glossary is intended to help you find your way through the mists of new names and new concepts.  In some cases you can find a link from a '''KDE 3''' component to its equivalent in the context of '''KDE SC 4''' software.


    </translate><span id="Activities"></span><translate>


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    ===Activities=== <!--T:6-->
    ;<span id="Activities">'''Activities'''</span>
    :'''Activities''' are sets of '''Plasma''' ''widgets'' that have their own wallpaper. A bit like [[#Virtual Desktops|Virtual Desktops]], but not quite.  
    :'''Activities''' are sets of '''Plasma''' ''widgets'' that have their own wallpaper. A bit like [[#Virtual Desktops|''Virtual Desktops'']], but not quite.  


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    :''More info'':
    ''More info'':  
    ::[[Plasma/FAQ#How can I add/remove an activity?|Creating Activities]]
    :[[Special:myLanguage/Plasma/FAQ/4.3#How can I add/remove an activity?|Creating Activities]]


    </translate><span id="Akonadi"></span><translate>


    <!--T:11-->
    ===Akonadi=== <!--T:11-->
    '''Akonadi'''
    :The data storage access mechanism for all ''PIM'' (Personal Information Manager) data in ''KDE SC 4''.  One single storage and retrieval system allows efficiency and extensibility not possible under ''KDE 3'', where each PIM component had its own system. Note that use of '''Akonadi''' does not change data storage formats (''vcard'', ''iCalendar'', ''mbox'', ''maildir'' etc.) - it just provides a new way of accessing and updating the data.
    :The data storage access mechanism for all ''PIM'' (Personal Information Manager) data in ''KDE SC 4''.  One single storage and retrieval system allows efficiency and extensibiliy not possible under ''KDE 3'', where each PIM component had its own system. Note that use of '''Akonadi''' does not change data storage formats (''vcard'', ''iCalendar'', ''mbox'', ''maildir'' etc.) - it just provides a new way of accessing and updating the data.


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    <!--T:14-->
    <!--T:14-->
    :''More info'':
    ''More info'':
    ::[http://userbase.kde.org/Akonadi/ Akonadi for KDE's PIM]  
    :[http://userbase.kde.org/Akonadi/ Akonadi for KDE's PIM]  
    ::[http://en.wikipedia.org/wiki/Akonadi Wikipedia - Akonadi]  
    :[http://en.wikipedia.org/wiki/Akonadi Wikipedia - Akonadi]  
    ::[http://techbase.kde.org/Projects/PIM/Akonadi Techbase - Akonadi]
    :[http://techbase.kde.org/Projects/PIM/Akonadi Techbase - Akonadi]


    </translate><span id="aRts"></span><translate>


    <!--T:15-->
    ===aRts=== <!--T:15-->
    '''aRts'''
    :The sound framework in KDE 2 and 3.  Its single-tasking nature caused problems when two sources of sound were encountered.  In the ''Plasma workspace'' it is replaced by [[#Phonon|Phonon]]  
    :The sound framework in KDE 2 and 3.  Its single-tasking nature caused problems when two sources of sound were encountered.  In the ''Plasma workspace'' it is replaced by [[#Phonon|''Phonon'']]  


    <!--T:16-->
    <!--T:16-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/ARts Wikipedia - aRts]  
    :[http://en.wikipedia.org/wiki/ARts Wikipedia - aRts]  
    ::[http://www.arts-project.org/gen/newsarchive/news_2000.html aRts Home Page]
    :[http://www.arts-project.org/gen/newsarchive/news_2000.html aRts Home Page]
     
    </translate><span id="Containment"></span><translate>
     
    ===Baloo=== <!--T:84-->
    :'''Baloo''' replaced [[Special:myLanguage/Glossary#Nepomuk|Nepomuk]] as a "sematic desktop" search framework. [[Special:myLanguage/Baloo|Baloo]] is a file indexing and search service that '''Dolphin''' uses to search for files. In a terminal type, <code>balooctl check</code> to find out whether an index was created already. <code>balooctl disable</code> and <code>balooctl status</code> are helpful instructions as well.
     
    <!--T:85-->
    ''More info'':
    :[http://en.wikipedia.org/wiki/Baloo Baloo]  


    </translate><span id="Containment"></span><translate>


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    ===Containment=== <!--T:17-->
    '''Containment'''
    :A ''Containment'' is a top level grouping of widgets. Each Containment manages the layout and configuration data of its set of widgets independently from other Containments.
    :A ''Containment'' is a top level grouping of widgets. Each Containment manages the layout and configuration data of its set of widgets independently from other Containments.


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    :The end result is that you can group widgets within a Containment according to the significance to your working pattern, rather than by directory grouping.     
    :The end result is that you can group widgets within a Containment according to the significance to your working pattern, rather than by directory grouping.     


    </translate><span id="D-Bus"></span><translate>


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    ===D-Bus=== <!--T:19-->
    '''D-Bus'''
    :An inter-service messaging system.  Developed by Red Hat<sup>®</sup>, it was heavily influenced by KDE3's ''DCOP'', which it supersedes.
    :An inter-service messaging system.  Developed by RedHat, it was heavily influenced by KDE3's ''DCOP'', which it supercedes.


    <!--T:20-->
    <!--T:20-->
    :''More info'':
    ''More info'':
    ::[http://freedesktop.org/wiki/Software/dbus FreeDesktop.org: What is D-Bus?]  
    :[http://freedesktop.org/wiki/Software/dbus FreeDesktop.org: What is D-Bus?]  
    ::[http://en.wikipedia.org/wiki/D-Bus Wikipedia: D-Bus]
    :[http://en.wikipedia.org/wiki/D-Bus Wikipedia: D-Bus]


    </translate><span id="Dolphin"></span><translate>


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    ===Dolphin=== <!--T:21-->
    '''Dolphin'''
    :The default file manager in KDE SC 4.  It has a side panel (''Places''), but navigation is mainly by the ''breadcrumb'' trail above the main window.  Split windows are possible, and views can be applied to individual windows. Mounting and umounting USB devices can be done in the side-panel. Other directories can be added to the Places panel.  A ''Tree view'' is also possible.
    :The default file manager in KDE SC 4.  It has a side panel (''Places''), but navigation is mainly by the ''breadcrumb'' trail above the main window.  Split windows are possible, and views can be applied to individual windows. Mounting and umounting USB devices can be done in the side-panel. Other directories can be added to the Places panel.  A ''Tree view'' is also possible.


    <!--T:22-->
    <!--T:22-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Dolphin_(software) Wikipedia - Dolphin (software)]
    :[http://en.wikipedia.org/wiki/Dolphin_(software) Wikipedia - Dolphin (software)]
    ::[http://dot.kde.org/2007/03/01/road-kde-4-dolphin-and-konqueror Road to KDE 4: Dolphin and Konqueror]  
    :[http://dot.kde.org/2007/03/01/road-kde-4-dolphin-and-konqueror Road to KDE 4: Dolphin and Konqueror]  
    ::[http://arstechnica.com/news.ars/post/20070405-afirst-look-at-dolphin-the-kde-4-file-manager.html Ars Technica: A First Look at Dolphin]  
    :[http://arstechnica.com/news.ars/post/20070405-afirst-look-at-dolphin-the-kde-4-file-manager.html Ars Technica: A First Look at Dolphin]  
    ::[http://www.youtube.com/watch?v=i4HS1v0a9Xs Youtube - KDE 4 rev 680445 - Dolphin]  
    :[http://www.youtube.com/watch?v=i4HS1v0a9Xs Youtube - KDE 4 rev 680445 - Dolphin]  
    ::[http://introducingkde4.blogspot.com/2007/12/dolphin.html Introducing KDE 4 Blog - Dolphin]
    :[http://introducingkde4.blogspot.com/2007/12/dolphin.html Introducing KDE 4 Blog - Dolphin]
    ::[[Tutorials/File_Management|The UserBase File Management Tutorial]]
    :[[Tutorials/File_Management|The UserBase File Management Tutorial]]


    <!--T:23-->
    </translate><span id="Extender"></span><translate>
    '''Extender'''
     
    ===Extender=== <!--T:23-->
    :''Extenders'' are a special kind of popup that can grow out of a [[#Plasma|Plasma]] panel for example. Extenders have detachable parts. Extenders are a new concept that arrived in Plasma for KDE 4.2. Notifications already use this system. This enables, for example, a user to drag a notification of a download or file copy job, onto his or her desktop and keep track of it there. The same can be done for other kinds of notifications, too.  
    :''Extenders'' are a special kind of popup that can grow out of a [[#Plasma|Plasma]] panel for example. Extenders have detachable parts. Extenders are a new concept that arrived in Plasma for KDE 4.2. Notifications already use this system. This enables, for example, a user to drag a notification of a download or file copy job, onto his or her desktop and keep track of it there. The same can be done for other kinds of notifications, too.  


    <!--T:24-->
    <!--T:24-->
    :''More info'':
    ''More info'':
    ::[http://kde-look.org/content/show.php/KDE+Extender+Mockup?content=30012 Mockup Screenshots]  
    :[http://kde-look.org/content/show.php/KDE+Extender+Mockup?content=30012 Mockup Screenshots]  
    ::[http://plasma.kde.org/cms/1069 The Elements of Plasma]
    :[http://plasma.kde.org/cms/1069 The Elements of Plasma]


    </translate><span id="Flake"></span><translate>


    <!--T:25-->
    ===Flake=== <!--T:25-->
    '''Flake'''
    :''Flake'' is a programming library to be used in [[Special:myLanguage/KOffice|KOffice]] and [[Special:myLanguage/Calligra|Calligra]].  Functionally, it provides ''Shapes'' to display content and ''Tools'' to manipulate content. Shapes can be zoomed or rotated and can be grouped to work as a single Shape, around which text flow is possible.  
    :''Flake'' is a programming library to be used in '''KOffice2'''.  Functionally, it provides ''Shapes'' to display content and ''Tools'' to manipulate content. Shapes can be zoomed or rotated and can be grouped to work as a single Shape, around which text flow is possible.  


    <!--T:26-->
    <!--T:26-->
    :''More info'':
    ''More info'':
    ::[http://wiki.koffice.org/index.php?title=Flake KOffice Wiki - Flake]  
    :[http://community.kde.org/Calligra/Libs/Flake KDE Community Wiki - Flake]  


    </translate><span id="Get Hot New Stuff"></span><translate>


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    ===Get Hot New Stuff=== <!--T:27-->
    '''Get Hot New Stuff'''
    :''Get Hot New Stuff (GHNS)'' is an open standard that makes it easy for users to download and install various extensions for their applications. Our implementation of GHNS is used by Plasma (for example to get new desktop themes), and by many applications and widgets.
    :''Get Hot New Stuff (GHNS)'' is an open standard that makes it easy for users to download and install various extensions for their applications. Our implementation of GHNS is used by Plasma (for example to get new desktop themes), and by many applications and widgets.


    <!--T:28-->
    <!--T:28-->
    :''More info'':
    ''More info'':
    ::[http://ghns.freedesktop.org Home of GHNS]
    :[http://ghns.freedesktop.org Home of GHNS]
    ::[http://lwn.net/Articles/227855/ An article on GHNS in KDE SC 4]
    :[http://lwn.net/Articles/227855/ An article on GHNS in KDE SC 4]


    </translate><span id="Home Directory"></span><translate>


    <!--T:29-->
    ===Home Directory=== <!--T:29-->
    '''Home Directory'''
    :That's the place in your system where all your files are kept. You can write your files outside of this folder, but all applications are configured to propose this folder as place to write your files to. It is easier when you keep your things here.  
    :That's the place in your system where all your files are kept. You can write your files outside of this folder, but all applications are configured to propose this folder as place to write your files to. It is easier when you keep your things here.  


    <!--T:30-->
    <!--T:30-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Home_directory Wikipedia - Home directory]  
    :[http://en.wikipedia.org/wiki/Home_directory Wikipedia - Home directory]  


    </translate><span id="KControl"></span><translate>


    <!--T:31-->
    ===KControl=== <!--T:31-->
    '''KControl'''
    :''KDE Control Center'', for setting global preferences in KDE 3. Replaced by the [[#System Settings|System Settings]] interface in KDE SC 4.
    :''KDE Control Center'', for setting global preferences in KDE 3. Replaced by the [[#System Settings|'''System Settings''']] interface in KDE SC 4.


    </translate><span id="KDOM"></span><translate>


    <!--T:32-->
    ===KDOM=== <!--T:32-->
    '''KDOM'''
    :A [[#KPart|''KPart'']] module making ''KHTML DOM (Document Object Model) '' rendering capabilities available to all applications. [[#KSVG|KSVG2]] is built on KDOM for KDE SC 4.
    :A [[#KPart|''KPart'']] module making ''KHTML DOM (Document Object Model) '' rendering capabilities available to all applications. [[#KSVG|''KSVG2'']] is built on KDOM for KDE SC 4.


    </translate><span id="KHTML"></span><translate>


    <!--T:33-->
    ===KHTML=== <!--T:33-->
    '''KHTML'''
    :''KHTML'' is the HTML rendering engine for the KDE Plasma desktop, as used by the '''Konqueror''' browser. It also provides a KPart that enables all KDE applications to display web content. A new introduction, ''Qt WebKit'' is also for Plasma and other application development.
    :''KHTML'' is the HTML rendering engine for the KDE Plasma desktop, as used by the '''Konqueror''' browser. It also provides a KPart that enables all KDE applications to display web content. A new introduction, ''Qt WebKit'' is also for Plasma and other application development.


    </translate><span id="Kicker"></span><translate>


    <!--T:34-->
    ===Kicker=== <!--T:34-->
    '''Kicker'''
    :In KDE 3, the relocatable bar, usually at the bottom of the screen (sometimes called the [[#Panel|''Panel'']]), on which application launchers, the [[#Pager|Pager]], and buttons for running applications reside.  See [[#Panel|Panel]]
    :In KDE 3, the relocatable bar, usually at the bottom of the screen (sometimes called the [[#Panel|''Panel'']]), on which application launchers, the [[#Pager|''Pager'']], and buttons for running applications reside.  See [[#Panel|''Panel'']]


    </translate><span id="Kickoff"></span><translate>


    <!--T:35-->
    ===Kickoff=== <!--T:35-->
    '''Kickoff'''
    :In KDE SC 4 (and some late versions of KDE 3), a launch menu in which apps are sorted by functional group.  "Favorites" replaces the "Most used applications" in ''Classic Menu'', and applications can be added to it.  Right-click also offers the possibility of adding applications to the desktop or panel.  Rapid access to a less-used application is made possible with the search box. Other menus are being worked on, since KDE SC 4 can be used with more than one launcher, should that be required.  
    :In KDE SC 4 (and some late versions of KDE 3), a launch menu in which apps are sorted by functional group.  "Favorites" replaces the "Most used applications" in ''Classic Menu'', and applications can be added to it.  Right-click also offers the possibility of adding applications to the desktop or panel.  Rapid access to a less-used application is made possible with the search box. Other menus are being worked on, since KDE SC 4 can be used with more than one launcher, should that be required.  


    <!--T:36-->
    <!--T:36-->
    :''More info'':
    ''More info'':
    ::[http://home.kde.org/~binner/kickoff/sneak_preview.html Kickoff Sneak Preview]
    :[http://home.kde.org/~binner/kickoff/sneak_preview.html Kickoff Sneak Preview]
    ::[http://en.opensuse.org/Kickoff Design documentation]
    :[http://en.opensuse.org/Kickoff Design documentation]


    <!--T:37-->
    </translate><span id="KJS"></span><translate>
    '''KJS'''
     
    ===KJS=== <!--T:37-->
    :KDE platform's ''JavaScript'' engine.
    :KDE platform's ''JavaScript'' engine.


    <!--T:38-->
    </translate><span id="KInfoCenter"></span><translate>
    '''KInfoCenter'''
     
    :'''Kinfocenter''' originated as part of [[#Kcontrol|'''Kcontrol''']] standing alone from KDE 3.1.  In KDE SC 4 up until 4.4 it is replaced by modules configured in [[#System Settings|'''System Settings''']], notably [[#Solid|''Solid'']], and is being reintroduced as an application in KDE SC 4.5.
    ===KInfoCenter=== <!--T:38-->
    :'''Kinfocenter''' originated as part of [[#KControl|KControl]] standing alone from KDE 3.1.  In KDE SC 4 up until 4.4 it is replaced by modules configured in [[#System Settings|System Settings]], notably [[#Solid|Solid]], and is being reintroduced as an application in KDE SC 4.5.


    <!--T:39-->
    <!--T:39-->
    :More Info:  
    ''More Info'':  
    ::[http://en.wikipedia.org/wiki/Kinfocenter Wikipedia - KInfoCenter]
    :[[Special:myLanguage/KInfoCenter|KInfoCenter]]
    :[http://en.wikipedia.org/wiki/Kinfocenter Wikipedia - KInfoCenter]


    </translate><span id="KIO"></span><translate>


    <!--T:40-->
    ===KIO=== <!--T:40-->
    '''KIO'''
    :''KDE Input/Output framework'' provides a single ''API'' for operating on files, whether local or on a remote server.  Additionally, ''KIO Slaves'' provide support for individual protocols.  Some particularly useful ones are ''http'', ''ftp'', ''sftp'', ''smb'', ''nfs'', ''ssh (fish)'', ''man'', ''tar'' and ''zip''.   
    :''KDE Input/Output framework'' provides a single ''API'' for operating on files, whether local or on a remote server.  Additionally, ''KIO Slaves'' provide support for individual protocols.  Some particularly useful ones are ''http'', ''ftp'', ''sftp'', ''smb'', ''nfs'', ''ssh (fish)'', ''man'', ''tar'' and ''zip''.   


    <!--T:41-->
    <!--T:41-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/KIO Wikipedia - KIO]  
    :[[Special:myLanguage/File transfers|A tutorial on file transfers]]
    ::[http://www.linux.com/feature/124686 Linux.com - Master the KIO slaves]  
    :[http://en.wikipedia.org/wiki/KIO Wikipedia - KIO]  
    ::[http://osdir.com/Article2159.phtml Breaking the Network Barrier]
    :[http://www.linux.com/feature/124686 Linux.com - Master the KIO slaves]  
    :[http://osdir.com/Article2159.phtml Breaking the Network Barrier]


    </translate><span id="Kiosk"></span><translate>


    <!--T:42-->
    ===Kiosk=== <!--T:42-->
    '''Kiosk'''
    :[http://techbase.kde.org/KDE_System_Administration/Kiosk/Introduction Kiosk] is a framework for restricting user capabilities on a ''KDE platform'' system, ideal for use in locked-down environments such as Internet cafés.  It is present in KDE 3 and KDE 4, but the administration tool, '''Kiosktool''' is KDE 3 only.  It can be used to configure KDE 4 apps, or '''kiosk''' configurations can be maintained by editing config files manually.
    :[http://techbase.kde.org/KDE_System_Administration/Kiosk/Introduction '''Kiosk'''] is a framework for restricting user capabilities on a ''KDE platform'' system, ideal for use in locked-down environments such as Internet cafés.  It is present in KDE 3 and KDE 4, but the adminisration tool, '''Kiosktool''' is KDE 3 only.  It can be used to configure KDE 4 apps, or '''kiosk''' configurations can be maintained by editing config files manually.


    </translate><span id="KPart"></span><translate>


    <!--T:43-->
    ===KPart=== <!--T:43-->
    '''KPart'''
    :A ''KPart'' is an individual component of the ''KDE Plasma desktop'' and allows applications to share their services with other applications. KParts allow '''KMail''' and '''KOrganizer''' to integrate (as plugins) into the '''Kontact''' suite, or [[#KHTML|KHTML]] to display sites in '''Akregator'''.
    :A ''KPart'' is an individual component of the ''KDE Plasma desktop'' and allows applications to share their services with other applications. KParts allow '''KMail''' and '''KOrganizer''' to integrate (as plugins) into the '''Kontact''' suite, or [[#KHTML|''KHTML'']] to display sites in '''Akregator'''.


    </translate><span id="Kross"></span><translate>


    <!--T:44-->
    ===Kross=== <!--T:44-->
    '''Kross'''
    : ''Kross'' is a scripting framework, enabling support for multiple scripting languages.  A plugin system allows for the support of further languages in the future.
    : ''Kross'' is a scripting framework, enabling support for multiple scripting languages.  A plugin system allows for the support of further languages in the future.


    </translate><span id="KRunner"></span><translate>


    <!--T:45-->
    ===KRunner=== <!--T:45-->
    '''KRunner'''
    :The mini-command-line that is accessed from the Classic menu, the keyboard shortcut ''Alt+F2'', or a right-click on the desktop.  In '''KDE SC 4''' a partial name will display all possible matches
    :The mini-command-line that is accessed from the Classic menu, the keyboard shortcut ''Alt+F2'', or a right-click on the desktop.  In '''KDE SC 4''' a partial name will display all possible matches


    <!--T:46-->
    <!--T:46-->
    :''More info'':
    ''More info'':
    ::[http://www.youtube.com/watch?v=B1-SFSmwTXw Youtube - KDE SC 4.1 KRunner]
    :[http://www.youtube.com/watch?v=B1-SFSmwTXw Youtube - KDE SC 4.1 KRunner]


    </translate><span id="KSVG"></span><translate>


    <!--T:47-->
    ===KSVG=== <!--T:47-->
    '''KSVG'''
    : ''KSVG'' enables support for ''scalable vector graphics'' in a [[#KHTML|KHTML]] browser.  ''KSVG2'' extends this for KDE SC 4.
    : ''KSVG'' enables support for ''scalable vector graphics'' in a [[#KHTML|''KHTML'']] browser.  ''KSVG2'' extends this for KDE SC 4.


    </translate><span id="KWin"></span><translate>


    <!--T:48-->
    ===KWin=== <!--T:48-->
    '''KWin'''
    :''KWin'' is the window manager.  This is where window decorations can be changed and themes applied. KDE SC 4 extends KWin to provide support for ''3D Compositing effects'' on the desktop.
    :''KWin'' is the window manager.  This is where window decorations can be changed and themes applied. KDE SC 4 extends KWin to provide support for ''3D Compositing effects'' on the desktop.


    <!--T:49-->
    <!--T:49-->
    :''More info'':
    ''More info'':
    ::[http://dot.kde.org/1180541665/ Road to KDE 4: KWin Composite]  
    :[[Special:myLanguage/KWin|KWin]]
    ::[http://francis.giannaros.org/blog/2007/12/03/kde4-desktop-effects-kwin-composite-video-tour/  KDE SC 4 Desktop Effects Video Tour]  
    :[http://dot.kde.org/1180541665/ Road to KDE 4: KWin Composite]  
    ::[http://www.youtube.com/watch?v=YrFz7IxXppU Youtube - KDE SC 4.0 KWin Composite Showcast]  
    :[http://francis.giannaros.org/blog/2007/12/03/kde4-desktop-effects-kwin-composite-video-tour/  KDE SC 4 Desktop Effects Video Tour]  
    ::[http://www.youtube.com/watch?v=4WBLlc6xCQ4 Youtube - KWin compositing config &amp; intro]
    :[http://www.youtube.com/watch?v=YrFz7IxXppU Youtube - KDE SC 4.0 KWin Composite Showcast]  
    :[http://www.youtube.com/watch?v=4WBLlc6xCQ4 Youtube - KWin compositing config &amp; intro]


    </translate><span id="Mini-CLI"></span><translate>


    <!--T:50-->
    ===Mini-CLI=== <!--T:50-->
    '''Mini-CLI'''
    :See [[#KRunner|KRunner]]
    :See [[#KRunner|'''KRunner''']]


    </translate><span id="Nepomuk"></span><translate>


    <!--T:51-->
    ===Nepomuk=== <!--T:51-->
    '''Nepomuk'''
    :"Networked Environment for Personalized, Ontology-based Management of Unified Knowledge",  ''Nepomuk'' aims to remove artificial barriers between information to allow dynamic classification, organisation and presentation of data to the user.  Whether downloaded from the internet, received in an email or scribbled in a note, information is globally searchable and tagged with intelligent data.  See [http://en.wikipedia.org/wiki/Semantic_desktop ''The Semantic Desktop''] for further discussion of this concept.  
    :"Networked Environment for Personalized, Ontology-based Management of Unified Knowledge",  ''Nepomuk'' aims to remove artificial barriers between information to allow dynamic classification, organisation and presentation of data to the user.  Whether downloaded from the internet, received in an email or scribbled in a note, information is globally searchable and tagged with intelligent data.  See [http://en.wikipedia.org/wiki/Semantic_desktop ''The Semantic Desktop''] for further discussion of this concept.  


    <!--T:52-->
    <!--T:52-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Semantic_desktop Wikipedia - Semantic Desktop]  
    :[[Special:MyLanguage/Nepomuk|Userbase Nepomuk page]]
    ::[http://en.wikipedia.org/wiki/NEPOMUK_(framework)  Wikipedia - NEPOMUK Framework]  
    :[http://en.wikipedia.org/wiki/Semantic_desktop Wikipedia - Semantic Desktop]  
    ::[http://nepomuk.semanticdesktop.org/xwiki/bin/view/Main1/ NEPOMUK website]
    :[http://en.wikipedia.org/wiki/NEPOMUK_(framework)  Wikipedia - NEPOMUK Framework]  
    ::[http://nepomuk.kde.org/discover/user NEPOMUK KDE]
    :[http://nepomuk.semanticdesktop.org/xwiki/bin/view/Main1/ NEPOMUK website]
    ::[[Nepomuk|Userbase Nepomuk page]]
    :[http://nepomuk.kde.org/discover/user NEPOMUK KDE]


    <!--T:53-->
    </translate><span id="Oxygen"></span><translate>
    '''Oxygen'''
     
    ===Oxygen=== <!--T:53-->
    :''Oxygen'' is the default theme of KDE SC 4. Designed to bring "a breath of fresh air" to the desktop by removing the simplistic, cartoonish icons, and replacing them with a clean theme and photo-realistic icons.  Oxygen uses a desaturated palette to avoid the icons becoming a distraction and uses detailed scalable graphics (SVG).  
    :''Oxygen'' is the default theme of KDE SC 4. Designed to bring "a breath of fresh air" to the desktop by removing the simplistic, cartoonish icons, and replacing them with a clean theme and photo-realistic icons.  Oxygen uses a desaturated palette to avoid the icons becoming a distraction and uses detailed scalable graphics (SVG).  


    <!--T:54-->
    <!--T:54-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Oxygen_Project Wikipedia - Oxygen Project]  
    :[http://en.wikipedia.org/wiki/Oxygen_Project Wikipedia - Oxygen Project]  
    ::[http://www.oxygen-icons.org/?cat=3 Oxygen Icons]
    :[http://www.oxygen-icons.org/?cat=3 Oxygen Icons]


    </translate><span id="Pager"></span><translate>


    <!--T:55-->
    ===Pager=== <!--T:55-->
    '''Pager'''
    :A ''pager'' is a small program or panel applet which shows the position of windows on your desktop and usually, if you have several [[#Virtual Desktops|Virtual Desktops]], gives an overview over all.
    :A ''pager'' is a small program or panel applet which shows the position of windows on your desktop and usually, if you have several [[#Virtual Desktops|''Virtual Desktops'']], gives an overview over all.


    </translate><span id="Panel"></span><translate>


    <!--T:56-->
    ===Panel=== <!--T:56-->
    '''Panel'''
    :See [[#Kicker|Kicker]]. In '''KDE SC 4''' the name "kicker" is dropped, and the name "panel" is the norm.  "Applets"; are largely replaced by [[#Widget|Widgets]]
    :See [[#Kicker|'''Kicker''']]. In '''KDE SC 4''' the name "kicker" is dropped, and the name "panel" is the norm.  "Applets"; are largely replaced by [[#Widgets|''Widgets'']]


    <!--T:87-->
    ''More info'':
    :[[Special:myLanguage/Plasma/Panels|Panels]]


    <!--T:57-->
    </translate><span id="Phonon"></span><translate>
    '''Phonon'''
     
    ===Phonon=== <!--T:57-->
    :A cross-platform multimedia API, interfacing with existing frameworks, such as ''gstreamer'' and ''xine engines''.  KDE 2 and 3 depended on ''aRts'' for sound.  ''Phonon'' replaces it.  
    :A cross-platform multimedia API, interfacing with existing frameworks, such as ''gstreamer'' and ''xine engines''.  KDE 2 and 3 depended on ''aRts'' for sound.  ''Phonon'' replaces it.  


    <!--T:58-->
    <!--T:58-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Phonon_(KDE) Wikipedia - Phonon (KDE)]  
    :[[Special:myLanguage/Phonon|Phonon]]
    ::[http://phonon.kde.org/cms/1030 Phonon website]
    :[http://en.wikipedia.org/wiki/Phonon_(KDE) Wikipedia - Phonon (KDE)]  
    :[http://phonon.kde.org/ Phonon website]


    </translate><span id="Plasma"></span><translate>


    <!--T:59-->
    ===Plasma=== <!--T:59-->
    '''Plasma'''
    :In KDE SC 4 the Plasma Desktop replaces ''KDesktop'', '''kicker''' and the ''superkaramba'' widget engine.  The applets are called '''Plasmoids''', and range from informational widgets to mini-apps such as a calculator or dictionary. Widgets from other sources, such as ''SuperKaramba widgets'' or ''Google Gadgets'' are also supported.
    :In KDE SC 4 the Plasma Desktop replaces ''KDesktop'', '''kicker''' and the ''superkaramba'' widget engine.  The applets are called '''Plasmoids''', and range from informational widgets to mini-apps such as a calculator or dictionary. Widgets from other sources, such as ''SuperKaramba widgets'' or ''Google Gadgets'' are also supported.


    <!--T:60-->
    <!--T:60-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Plasma_(KDE) Wikipedia - Plasma (KDE)]  
    :[http://en.wikipedia.org/wiki/Plasma_(KDE) Wikipedia - Plasma (KDE)]  
    ::[http://plasma.kde.org/cms/1107 Plasma website]  
    :[http://plasma.kde.org/cms/1107 Plasma website]  
    ::[[Plasma|Plasma FAQ]]
    :[[Special:myLanguage/Plasma|The Plasma main page]]
    ::[http://www.youtube.com/watch?v=H5RpH9HOXJA&amp;feature=related  Youtube - Plasma Applets Galore (Part 1)]
    :[[Special:myLanguage/Plasma/FAQ/Index|The Plasma FAQ's]]
    ::[http://liquidat.wordpress.com/ Liquidat&#039;s Blog]
    :[http://www.youtube.com/watch?v=H5RpH9HOXJA&amp;feature=related  Youtube - Plasma Applets Galore (Part 1)]
    :[http://liquidat.wordpress.com/ Liquidat&#039;s Blog]


    </translate><span id="Qt"></span><translate>


    <!--T:61-->
    ===Qt=== <!--T:61-->
    '''Qt'''
    :(Pronounced "cute") A framework/toolkit for writing cross-platform applications. It is used by many cross-platform applications such as '''Opera''' browser, '''GoogleEarth''' and '''Skype'''. ''Qt'' is developed by Trolltech, who are now part of the Nokia company.  Qt forms the underlying library KDE software is built on.  
    :(Pronounced "cute") A framework/toolkit for writing cross-platform applications. It is used by many cross-platform applications such as '''Opera''' browser, '''GoogleEarth''' and '''Skype'''. ''Qt'' is developed by Trolltech, who are now part of the Nokia company.  Qt forms the underlying library KDE software is built on.  


    <!--T:62-->
    <!--T:62-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/Qt_(toolkit) The Qt Toolkit]
    :[http://en.wikipedia.org/wiki/Qt_(toolkit) The Qt Toolkit]
    ::[http://trolltech.com/products/qt/learnmore/demo Qt Demo Videos]
    :[http://trolltech.com/products/qt/learnmore/demo Qt Demo Videos]


    <!--T:63-->
    </translate><span id="Solid"></span><translate>
    '''Solid'''
     
    ===Solid=== <!--T:63-->
    :''Solid'' provides a single API for hardware management.  Hardware is grouped into "domains".  The initial domains relate to ''HAL'', ''NetworkManager'' and the ''Bluetooth'' stack. Since the backends for Solid are pluggable, Solid helps application developers write less code, and have it platform independent.  
    :''Solid'' provides a single API for hardware management.  Hardware is grouped into "domains".  The initial domains relate to ''HAL'', ''NetworkManager'' and the ''Bluetooth'' stack. Since the backends for Solid are pluggable, Solid helps application developers write less code, and have it platform independent.  


    <!--T:64-->
    <!--T:64-->
    :More Info:  
    ''More info'':
    ::[http://solid.kde.org/cms/1058 Discover Solid]  
    :[http://solid.kde.org/cms/1058 Discover Solid]  
    ::[http://dot.kde.org/1177385913/ Solid Brings Hardware Configuration and Control to the KDE platform]
    :[http://dot.kde.org/1177385913/ Solid Brings Hardware Configuration and Control to the KDE platform]


    </translate><span id="Soprano"></span><translate>


    <!--T:65-->
    ===Soprano=== <!--T:65-->
    '''Soprano'''
    :''Soprano'' is a sub-project of [[#Nepomuk|Nepomuk]], providing a repository for gathered information such as tags, ratings, etc..  This makes the information available to [[#Strigi|Strigi]]  
    :''Soprano'' is a sub-project of [[#Nepomuk|''Nepomuk'']], providing a repository for gathered information such as tags, ratings, etc..  This makes the information available to [[#Strigi|''Strigi'']]  


    <!--T:66-->
    <!--T:85-->
    :''More info'':
    ''More info'':
    ::[http://tinyurl.com/334u7r More about Nepomuk-KDE: Soprano and KDE platform integration]
    :[http://liquidat.wordpress.com/2007/06/19/more-about-nepomuk-kde-soprano-and-kde-integration/ More about Nepomuk-KDE: Soprano and KDE platform integration]


    </translate><span id="Strigi"></span><translate>


    <!--T:67-->
    ===Strigi=== <!--T:67-->
    '''Strigi'''
    :A deep-indexed search daemon, ''Strigi'' aims to be fast and light-weight.  It also uses ''SHA-1 hash'' which will help in the identification of duplicate files.  
    :A deep-indexed search daemon, ''Strigi'' aims to be fast and light-weight.  It also uses ''SHA-1 hash'' which will help in the identification of duplicate files.  


    <!--T:68-->
    <!--T:68-->
    :''More info'':
    ''More info'':
    ::[http://strigi.sourceforge.net/ Strigi - the fastest and smallest desktop searching program]
    :[http://strigi.sourceforge.net/ Strigi - the fastest and smallest desktop searching program]
    ::[http://en.wikipedia.org/wiki/Strigi Wikipedia - Strigi]
    :[http://en.wikipedia.org/wiki/Strigi Wikipedia - Strigi]


    </translate><span id="System Settings"></span><translate>


    <!--T:69-->
    ===System Settings=== <!--T:69-->
    '''System Settings'''
    :KDE SC 4 replacement for [[#KControl|KControl]] (Control Center) providing modular control over the KDE platform.  
    :KDE SC 4 replacement for [[#KControl|'''KControl''']] (Control Center) providing modular control over the KDE platform.  


    <!--T:70-->
    <!--T:70-->
    :''More info'':
    ''More info'':
    ::[http://www.lazytechguy.com/2008/01/kde4-system-settings.html KDE SC 4 System Settings illustrated]
    :[[Special:myLanguage/System Settings|System Settings]]
    :[http://www.lazytechguy.com/2008/01/kde4-system-settings.html KDE SC 4 System Settings illustrated]


    </translate><span id="Threadweaver"></span><translate>


    <!--T:71-->
    ===Threadweaver=== <!--T:71-->
    '''Threadweaver'''
    :This thread programming library spreads work among multiple-core processors where available, prioritising them before queueing them for execution. ''ThreadWeaver'' provides a high-level job interface for multithreaded programming.  
    :This thread programming library spreads work among multiple-core processors where available, prioritising them before queueing them for execution. ''ThreadWeaver'' provides a high-level job interface for multithreaded programming.  


    <!--T:72-->
    :''More info'':
    ::[http://tinyurl.com/5edc2k Why Multithreading? (Technical article)]


    <!--T:86-->
    ''More info'':
    :[http://www.englishbreakfastnetwork.org/apidocs/apidox-kde-4.0/kdelibs-apidocs/threadweaver/html/Why.html Why Multithreading? (Technical article)]
    </translate><span id="Virtual Desktops"></span><translate>


    <!--T:73-->
    ===Virtual Desktops=== <!--T:73-->
    '''Virtual Desktops'''
    :A popular concept of Unix based window managers is the one of ''virtual desktops''. This means you have not only one screen where you can place your windows on but several. When you switch to a different desktop (usually with a pager) you will only see the windows which you started on your new desktop or moved to it. A window can also be made "sticky" which means it appears on all virtual desktops.
    :A popular concept of Unix based window managers is the one of ''virtual desktops''. This means you have not only one screen where you can place your windows on but several. When you switch to a different desktop (usually with a pager) you will only see the windows which you started on your new desktop or moved to it. A window can also be made "sticky" which means it appears on all virtual desktops.


    </translate><span id="WebKit"></span><translate>


    <!--T:74-->
    ===WebKit=== <!--T:74-->
    '''WebKit'''
    :HTML ''rendering engine'', originating from a fork of [[#KHTML|KHTML]]. Adopted by Apple and developed for Safari. ''Webkit'' brings the whole functionality back to KDE SC 4, where it is available through Qt.  
    :HTML ''rendering engine'', originating from a fork of [[#KHTML|''KHTML'']]. Adopted by Apple and developed for Safari. ''Webkit'' brings the whole functionality back to KDE SC 4, where it is available through Qt.  


    <!--T:75-->
    <!--T:75-->
    :''More info'':
    ''More info'':
    ::[http://webkit.org/ The Webkit home page]  
    :[http://webkit.org/ The Webkit home page]  
    ::[http://en.wikipedia.org/wiki/Webkit Wikipedia - Webkit]
    :[http://en.wikipedia.org/wiki/Webkit Wikipedia - Webkit]


    </translate><span id="Widget"></span><translate>


    <!--T:76-->
    ===Widget=== <!--T:76-->
    '''Widget'''
    :Collins English Dictionary: "Any small mechanism or device the name of which is unknown or temporarily forgotten." In KDE software terms, a '''widget''' is a single component on the canvas. Other common names that are analogous are "applet" or "gadget". Superkaramba Themes, Apple's Dashboard, Google Gadgets, Yahoo Widgets, Vista Sidebar Widgets, Opera Widgets are all examples of other widget systems (some of which are supported by Plasma as well).
    :Collins English Dictionary: "Any small mechanism or device the name of which is unknown or temporarily forgotten." In KDE software terms, a '''widget''' is a single component on the canvas. Other common names that are analogous are "applet" or "gadget". Superkaramba Themes, Apple's Dashboard, Google Gadgets, Yahoo Widgets, Vista Sidebar Widgets, Opera Widgets are all examples of other widget systems (some of which are supported by Plasma as well).


    </translate><span id="X-Server"></span><translate>


    <!--T:77-->
    ===X-Server=== <!--T:77-->
    '''X-Server'''
    :The ''X-Server'' represents a basic layer upon which the various GUIs like the KDE Plasma desktop are built. It manages the basic mouse and keyboard input (from the local host as well as from remote hosts) and provides elementary graphic routines to draw rectangles and other primitives.
    :The ''X-Server'' represents a basic layer upon which the various GUIs like the KDE Plasma desktop are built. It manages the basic mouse and keyboard input (from the local host as well as from remote hosts) and provides elementary graphic routines to draw rectangles and other primitives.


    </translate><span id="XMLGUI"></span><translate>


    <!--T:78-->
    ===XMLGUI=== <!--T:78-->
    '''XMLGUI'''
    :A programmers' framework for designing the user interface.  It is extensively used by ''KParts''  
    :A programmers' framework for designing the user interface.  It is extensively used by ''KParts''  


    <!--T:79-->
    <!--T:79-->
    :''More info'':
    ''More info'':
    ::[http://en.wikipedia.org/wiki/XMLGUI Wikipedia - XMLGUI]  
    :[http://en.wikipedia.org/wiki/XMLGUI Wikipedia - XMLGUI]  
    ::[http://en.wikipedia.org/wiki/Qt_Style_Sheets Wikipedia - Qt Style Sheets]
    :[http://en.wikipedia.org/wiki/Qt_Style_Sheets Wikipedia - Qt Style Sheets]


    </translate><span id="ZUI"></span><translate>


    <!--T:80-->
    ===ZUI=== <!--T:80-->
    '''ZUI'''
    :The "Zooming User Interface".  "By zooming out, users can get an overview of all the object groupings that they have made. These groupings may reflect the projects they are working on, be ways to keep different sets of files organized, etc. By hovering or clicking on one of these groups when zoomed out, users can either get a preview/snapshot of what is in the grouping, or zoom in on that grouping so that it is displayed full size on the physical screen." ''aseigo''.  
    :The "Zooming User Interface".  "By zooming out, users can get an overview of all the object groupings that they have made. These groupings may reflect the projects they are working on, be ways to keep different sets of files organized, etc. By hovering or clicking on one of these groups when zoomed out, users can either get a preview/snapshot of what is in the grouping, or zoom in on that grouping so that it is displayed full size on the physical screen." ''aseigo''.  


    <!--T:81-->
    <!--T:81-->
    :''More info'':
    ''More info'':
    ::[http://www.youtube.com/watch?v=EhODrJkoidA Youtube ZUI demo]
    :[http://www.youtube.com/watch?v=EhODrJkoidA Youtube ZUI demo]</translate>


    <!--T:82-->
    {{Prev|Special:myLanguage/An_introduction_to_KDE|An Introduction to KDE}}
    {|style="text-align:right"
    |'''Back to [[An_introduction_to_KDE|the Introduction page''']]
    |}


    <!--T:83-->
    <translate><!--T:83-->
    [[Category:Getting Started]]
    [[Category:Getting Started]]
    [[Category:System]]
    [[Category:System]]
    </translate>
    </translate>

    Revision as of 06:23, 27 November 2017

    This page sets out to provide a non-technical reference, together with links for further information or demonstration. See also Jargon File.

    A General Overview

    A KDE 4.0 Visual Guide: and a 4.1 screencast gives an excellent overview of KDE Software Compilation 4 in the early days.

    The following glossary is intended to help you find your way through the mists of new names and new concepts. In some cases you can find a link from a KDE 3 component to its equivalent in the context of KDE SC 4 software.

    Activities

    Activities are sets of Plasma widgets that have their own wallpaper. A bit like Virtual Desktops, but not quite.
    For example you have a "work activity" with commit rss feeds, a note with your TODO, a Folder View with your work related files, and a subtle wallpaper.
    Next to it, you have your "freetime activity", with previews of family photos and dogs, rss feeds from your favourite blogs, a Folder View showing your movie collection, a twitter applet and of course that Iron Maiden wallpaper you have been loving since the early 80s.
    At 1700 hours sharp you switch from the "work activity" to your "freetime activity".

    More info:

    Creating Activities

    Akonadi

    The data storage access mechanism for all PIM (Personal Information Manager) data in KDE SC 4. One single storage and retrieval system allows efficiency and extensibility not possible under KDE 3, where each PIM component had its own system. Note that use of Akonadi does not change data storage formats (vcard, iCalendar, mbox, maildir etc.) - it just provides a new way of accessing and updating the data.
    The main reasons for design and development of Akonadi are of technical nature, e.g. having a unique way to access PIM-data (contacts, calendars, emails..) from different applications (e.g. kmail, kword..), thus eliminating the need to write similar code here and there.
    Another goal is to de-couple GUI applications like kmail from the direct access to external resources like mail-servers - which was a major reason for bug-reports/wishes with regard to performance/responsiveness in the past.

    More info:

    Akonadi for KDE's PIM
    Wikipedia - Akonadi
    Techbase - Akonadi

    aRts

    The sound framework in KDE 2 and 3. Its single-tasking nature caused problems when two sources of sound were encountered. In the Plasma workspace it is replaced by Phonon

    More info:

    Wikipedia - aRts
    aRts Home Page

    Baloo

    Baloo replaced Nepomuk as a "sematic desktop" search framework. Baloo is a file indexing and search service that Dolphin uses to search for files. In a terminal type, balooctl check to find out whether an index was created already. balooctl disable and balooctl status are helpful instructions as well.

    More info:

    Baloo

    Containment

    A Containment is a top level grouping of widgets. Each Containment manages the layout and configuration data of its set of widgets independently from other Containments.
    The end result is that you can group widgets within a Containment according to the significance to your working pattern, rather than by directory grouping.

    D-Bus

    An inter-service messaging system. Developed by Red Hat®, it was heavily influenced by KDE3's DCOP, which it supersedes.

    More info:

    FreeDesktop.org: What is D-Bus?
    Wikipedia: D-Bus

    Dolphin

    The default file manager in KDE SC 4. It has a side panel (Places), but navigation is mainly by the breadcrumb trail above the main window. Split windows are possible, and views can be applied to individual windows. Mounting and umounting USB devices can be done in the side-panel. Other directories can be added to the Places panel. A Tree view is also possible.

    More info:

    Wikipedia - Dolphin (software)
    Road to KDE 4: Dolphin and Konqueror
    Ars Technica: A First Look at Dolphin
    Youtube - KDE 4 rev 680445 - Dolphin
    Introducing KDE 4 Blog - Dolphin
    The UserBase File Management Tutorial

    Extender

    Extenders are a special kind of popup that can grow out of a Plasma panel for example. Extenders have detachable parts. Extenders are a new concept that arrived in Plasma for KDE 4.2. Notifications already use this system. This enables, for example, a user to drag a notification of a download or file copy job, onto his or her desktop and keep track of it there. The same can be done for other kinds of notifications, too.

    More info:

    Mockup Screenshots
    The Elements of Plasma

    Flake

    Flake is a programming library to be used in KOffice and Calligra. Functionally, it provides Shapes to display content and Tools to manipulate content. Shapes can be zoomed or rotated and can be grouped to work as a single Shape, around which text flow is possible.

    More info:

    KDE Community Wiki - Flake

    Get Hot New Stuff

    Get Hot New Stuff (GHNS) is an open standard that makes it easy for users to download and install various extensions for their applications. Our implementation of GHNS is used by Plasma (for example to get new desktop themes), and by many applications and widgets.

    More info:

    Home of GHNS
    An article on GHNS in KDE SC 4

    Home Directory

    That's the place in your system where all your files are kept. You can write your files outside of this folder, but all applications are configured to propose this folder as place to write your files to. It is easier when you keep your things here.

    More info:

    Wikipedia - Home directory

    KControl

    KDE Control Center, for setting global preferences in KDE 3. Replaced by the System Settings interface in KDE SC 4.

    KDOM

    A KPart module making KHTML DOM (Document Object Model) rendering capabilities available to all applications. KSVG2 is built on KDOM for KDE SC 4.

    KHTML

    KHTML is the HTML rendering engine for the KDE Plasma desktop, as used by the Konqueror browser. It also provides a KPart that enables all KDE applications to display web content. A new introduction, Qt WebKit is also for Plasma and other application development.

    Kicker

    In KDE 3, the relocatable bar, usually at the bottom of the screen (sometimes called the Panel), on which application launchers, the Pager, and buttons for running applications reside. See Panel

    Kickoff

    In KDE SC 4 (and some late versions of KDE 3), a launch menu in which apps are sorted by functional group. "Favorites" replaces the "Most used applications" in Classic Menu, and applications can be added to it. Right-click also offers the possibility of adding applications to the desktop or panel. Rapid access to a less-used application is made possible with the search box. Other menus are being worked on, since KDE SC 4 can be used with more than one launcher, should that be required.

    More info:

    Kickoff Sneak Preview
    Design documentation

    KJS

    KDE platform's JavaScript engine.

    KInfoCenter

    Kinfocenter originated as part of KControl standing alone from KDE 3.1. In KDE SC 4 up until 4.4 it is replaced by modules configured in System Settings, notably Solid, and is being reintroduced as an application in KDE SC 4.5.

    More Info:

    KInfoCenter
    Wikipedia - KInfoCenter

    KIO

    KDE Input/Output framework provides a single API for operating on files, whether local or on a remote server. Additionally, KIO Slaves provide support for individual protocols. Some particularly useful ones are http, ftp, sftp, smb, nfs, ssh (fish), man, tar and zip.

    More info:

    A tutorial on file transfers
    Wikipedia - KIO
    Linux.com - Master the KIO slaves
    Breaking the Network Barrier

    Kiosk

    Kiosk is a framework for restricting user capabilities on a KDE platform system, ideal for use in locked-down environments such as Internet cafés. It is present in KDE 3 and KDE 4, but the administration tool, Kiosktool is KDE 3 only. It can be used to configure KDE 4 apps, or kiosk configurations can be maintained by editing config files manually.

    KPart

    A KPart is an individual component of the KDE Plasma desktop and allows applications to share their services with other applications. KParts allow KMail and KOrganizer to integrate (as plugins) into the Kontact suite, or KHTML to display sites in Akregator.

    Kross

    Kross is a scripting framework, enabling support for multiple scripting languages. A plugin system allows for the support of further languages in the future.

    KRunner

    The mini-command-line that is accessed from the Classic menu, the keyboard shortcut Alt+F2, or a right-click on the desktop. In KDE SC 4 a partial name will display all possible matches

    More info:

    Youtube - KDE SC 4.1 KRunner

    KSVG

    KSVG enables support for scalable vector graphics in a KHTML browser. KSVG2 extends this for KDE SC 4.

    KWin

    KWin is the window manager. This is where window decorations can be changed and themes applied. KDE SC 4 extends KWin to provide support for 3D Compositing effects on the desktop.

    More info:

    KWin
    Road to KDE 4: KWin Composite
    KDE SC 4 Desktop Effects Video Tour
    Youtube - KDE SC 4.0 KWin Composite Showcast
    Youtube - KWin compositing config & intro

    Mini-CLI

    See KRunner

    Nepomuk

    "Networked Environment for Personalized, Ontology-based Management of Unified Knowledge", Nepomuk aims to remove artificial barriers between information to allow dynamic classification, organisation and presentation of data to the user. Whether downloaded from the internet, received in an email or scribbled in a note, information is globally searchable and tagged with intelligent data. See The Semantic Desktop for further discussion of this concept.

    More info:

    Userbase Nepomuk page
    Wikipedia - Semantic Desktop
    Wikipedia - NEPOMUK Framework
    NEPOMUK website
    NEPOMUK KDE

    Oxygen

    Oxygen is the default theme of KDE SC 4. Designed to bring "a breath of fresh air" to the desktop by removing the simplistic, cartoonish icons, and replacing them with a clean theme and photo-realistic icons. Oxygen uses a desaturated palette to avoid the icons becoming a distraction and uses detailed scalable graphics (SVG).

    More info:

    Wikipedia - Oxygen Project
    Oxygen Icons

    Pager

    A pager is a small program or panel applet which shows the position of windows on your desktop and usually, if you have several Virtual Desktops, gives an overview over all.

    Panel

    See Kicker. In KDE SC 4 the name "kicker" is dropped, and the name "panel" is the norm. "Applets"; are largely replaced by Widgets

    More info:

    Panels

    Phonon

    A cross-platform multimedia API, interfacing with existing frameworks, such as gstreamer and xine engines. KDE 2 and 3 depended on aRts for sound. Phonon replaces it.

    More info:

    Phonon
    Wikipedia - Phonon (KDE)
    Phonon website

    Plasma

    In KDE SC 4 the Plasma Desktop replaces KDesktop, kicker and the superkaramba widget engine. The applets are called Plasmoids, and range from informational widgets to mini-apps such as a calculator or dictionary. Widgets from other sources, such as SuperKaramba widgets or Google Gadgets are also supported.

    More info:

    Wikipedia - Plasma (KDE)
    Plasma website
    The Plasma main page
    The Plasma FAQ's
    Youtube - Plasma Applets Galore (Part 1)
    Liquidat's Blog

    Qt

    (Pronounced "cute") A framework/toolkit for writing cross-platform applications. It is used by many cross-platform applications such as Opera browser, GoogleEarth and Skype. Qt is developed by Trolltech, who are now part of the Nokia company. Qt forms the underlying library KDE software is built on.

    More info:

    The Qt Toolkit
    Qt Demo Videos

    Solid

    Solid provides a single API for hardware management. Hardware is grouped into "domains". The initial domains relate to HAL, NetworkManager and the Bluetooth stack. Since the backends for Solid are pluggable, Solid helps application developers write less code, and have it platform independent.

    More info:

    Discover Solid
    Solid Brings Hardware Configuration and Control to the KDE platform

    Soprano

    Soprano is a sub-project of Nepomuk, providing a repository for gathered information such as tags, ratings, etc.. This makes the information available to Strigi

    More info:

    More about Nepomuk-KDE: Soprano and KDE platform integration

    Strigi

    A deep-indexed search daemon, Strigi aims to be fast and light-weight. It also uses SHA-1 hash which will help in the identification of duplicate files.

    More info:

    Strigi - the fastest and smallest desktop searching program
    Wikipedia - Strigi

    System Settings

    KDE SC 4 replacement for KControl (Control Center) providing modular control over the KDE platform.

    More info:

    System Settings
    KDE SC 4 System Settings illustrated

    Threadweaver

    This thread programming library spreads work among multiple-core processors where available, prioritising them before queueing them for execution. ThreadWeaver provides a high-level job interface for multithreaded programming.


    More info:

    Why Multithreading? (Technical article)

    Virtual Desktops

    A popular concept of Unix based window managers is the one of virtual desktops. This means you have not only one screen where you can place your windows on but several. When you switch to a different desktop (usually with a pager) you will only see the windows which you started on your new desktop or moved to it. A window can also be made "sticky" which means it appears on all virtual desktops.

    WebKit

    HTML rendering engine, originating from a fork of KHTML. Adopted by Apple and developed for Safari. Webkit brings the whole functionality back to KDE SC 4, where it is available through Qt.

    More info:

    The Webkit home page
    Wikipedia - Webkit

    Widget

    Collins English Dictionary: "Any small mechanism or device the name of which is unknown or temporarily forgotten." In KDE software terms, a widget is a single component on the canvas. Other common names that are analogous are "applet" or "gadget". Superkaramba Themes, Apple's Dashboard, Google Gadgets, Yahoo Widgets, Vista Sidebar Widgets, Opera Widgets are all examples of other widget systems (some of which are supported by Plasma as well).

    X-Server

    The X-Server represents a basic layer upon which the various GUIs like the KDE Plasma desktop are built. It manages the basic mouse and keyboard input (from the local host as well as from remote hosts) and provides elementary graphic routines to draw rectangles and other primitives.

    XMLGUI

    A programmers' framework for designing the user interface. It is extensively used by KParts

    More info:

    Wikipedia - XMLGUI
    Wikipedia - Qt Style Sheets

    ZUI

    The "Zooming User Interface". "By zooming out, users can get an overview of all the object groupings that they have made. These groupings may reflect the projects they are working on, be ways to keep different sets of files organized, etc. By hovering or clicking on one of these groups when zoomed out, users can either get a preview/snapshot of what is in the grouping, or zoom in on that grouping so that it is displayed full size on the physical screen." aseigo.

    More info:

    Youtube ZUI demo