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Task 3: Understand XWiki concepts AWM has made it simple to create your first application but it's cheating a bit since it's doing all the work of generating the various wiki pages for you.

:) To do that you need to understand the concepts of XClass, XObjects, XProperties, Sheets and Templates.

Track: Understand XWiki core concepts

= Task 3: Understand XWiki concepts = AWM has made it simple to create your first application but it's cheating a bit since it's doing all the work of generating the various wiki pages for you.

:) To do that you need to understand the concepts of XClass, XObjects, XProperties, Sheets and Templates.

Add concept of image to What's New API

title : Add concept of image to What's New API

XWiki is quite a foreign concept to many people. e.g. people who are not in the tech world; Grandpa/Grandma old generation.

\r\n\r\n## Requirements\r\n* Knowledge of HTML, CSS, Bootstrap, XML, Git\r\n* You will encounter concepts like Data Model, Skins Extensions, Templating engines, Apache Velocity, modular components, etc. but you don't need to be familiar with them in advance\r\n\r\n## Expected Outcome\r\n* Pull Request on the https://github.com/xwiki/xwiki-platform repository with the solution\r\n* The summary of the Pull Request must have a first line matching the JIRA issue following by a colon and then the title of this issue\r\n* Following best practices defined at http://dev.xwiki.org/xwiki/bin/view/Main/WebHome\r\n\r\n## Prerequisites\r\n\r\nBefore starting your task familiarize yourself a bit with XWiki.

\r\n\r\n## Requirements\r\n* Knowledge of HTML, CSS, Bootstrap, XML, Git\r\n* You will encounter concepts like Data Model, Skins Extensions, Templating engines, Apache Velocity, modular components, etc. but you don't need to be familiar with them in advance\r\n\r\n## Expected Outcome\r\n* Pull Request on the https://github.com/xwiki/xwiki-platform repository with the solution\r\n* The summary of the Pull Request must have a first line matching the JIRA issue following by a colon and then the title of this issue\r\n* Following best practices defined at http://dev.xwiki.org/xwiki/bin/view/Main/WebHome\r\n\r\n## Prerequisites\r\n\r\nBefore starting your task familiarize yourself a bit with XWiki.

\r\n\r\n## Requirements\r\n* Knowledge of HTML, CSS, Bootstrap, XML, Git\r\n* You will encounter concepts like Data Model, Skins Extensions, Templating engines, Apache Velocity, modular components, etc. but you don't need to be familiar with them in advance\r\n\r\n## Expected Outcome\r\n* Pull Request on the https://github.com/xwiki/xwiki-platform repository with the solution\r\n* The summary of the Pull Request must have a first line matching the JIRA issue following by a colon and then the title of this issue\r\n* Following best practices defined at http://dev.xwiki.org/xwiki/bin/view/Main/WebHome\r\n\r\n## Prerequisites\r\n\r\nBefore starting your task familiarize yourself a bit with XWiki.

XWiki is quite a foreign concept to many people. e.g. people who are not in the tech world; Grandpa/Grandma old generation.

The introduction of the Nested Pages concept In XWiki 7.2, due to frequent users demands, we have introduced the ability to create spaces under other spaces. It's the Nested Spaces concept. We suddenly had the ability to create a hierarchy of spaces to organize content.

Indeed, the migrator cannot create nested pages in an old XWiki instance where this concept did not exist! Go to the Extension Manager in your wiki, and install the Nested Pages Migrator Application.

However, in order not to break retro-compatibility with many existing features and applications we had to keep the concepts of "Page" and "Space" in XWiki while adapting them to emulate the Nested Pages feature.

For them, this relationship is crucial. === The introduction of the Nested Pages concept === In XWiki 7.2, due to frequent users demands, we have introduced the ability to create spaces under other spaces. It's the **Nested Spaces** concept. We suddenly had the ability to create a hierarchy of spaces to organize content.

XWiki used to totally skip the whole concept of exclusion.

XWiki 7.2 has introduced the concept of Nested Spaces. With this new concept it's legitimate to ask oneself what are the differences between using a (sub)wiki or using Nested Pages.

XWiki 7.2 has introduced the concept of Nested Spaces. With this new concept it's legitimate to ask oneself what are the differences between using a (sub)wiki or using Nested Pages

{{info}} If you're wondering why some guides mention Spaces while you only see Pages in the UI, it's because at the level of the XWiki internals (the model), XWiki uses the concept of Spaces. However to make it simpler for users and since we introduced the [[concept of Nested Pages>>Documentation.UserGuide.Features.ContentOrganization]] we're only showing Pages in the UI, simulating Nested Pages using Spaces.

summary : The HTML export has been improved to better scale with the Nested Pages concept. The exported pages are now located in directories named after the parent pages in which they are located.

It's a bridge to the Panel concept. To add a Panel to the left Panels area, simply create a document containing a PanelClass xobject and add it to the list of Panels to display in the Administration.

It's a bridge to the Panel concept. To add a Panel to the right Panels area, simply create a document containing a PanelClass xobject and add it to the list of Panels to display in the Administration.