Wiki is organized as a tree of pages in which each page may contain many sub-pages. The hierarchy is reflected on UI by the Breadcrumb and the page tree at the left pane. When a page is added, it is always defined as a sub-page to the current one. Wiki is a wiki platform which can host several wikis. So, you can have wikis for portals, wikis for groups or users. However, the page hierarchy is not reflected in the URLs as they are accessible flatly by their URLs.

Spaces represent a partitioning of Wiki data. A space is a set of pages. So, the space partitioning means they are independent trees. This separation is to enable Wiki to provide silos of knowledge for different interests groups.

There are 3 types of spaces:

There are two ways to create a page:

The first way: Using the toolbar.

1. Go to a Wiki space in which you want to create a page.

2. Click Add Page and select Blank Page or From Template... from the drop-down menu if you want to use an available template.

If you select From Template..., a list of available templates appears:

You can:

i. Click Preview corresponding to the template you want to see.

ii. Click Select corresponding to the template you want to select for your new page.

The template for your page is displayed:

3. Enter the title for your page. The page title must be unique.

4. Enter the content for your page by using Wiki Markup or the Rich Text editor.

5. Click Preview to see how your page looks like (optional); or click Save to finish.

The second way: Using the undefined link in a page.

In the Wiki application of eXo Knowledge, you can add a link pointing to a page which you are going to create later. Such links are called undefined links. These links are often used to remind other Wiki users to create the page.

To add an undefined link for creating a page later:

1. Add a link by typing the page title between square brackets '[[...]]' or '[.... ]' (depending on your selected syntax) into your page body.

For example:

Syntax	What you type	What you get
Xwiki 2.0	[[eXo User Guide]]
Confluence 1.0	[eXo User Guide]

2. Click Save to save the page containing the link. The undefined link is colored in red with the underline.

3. Click the created red link to open the 'Add page' form.

4. Follow the steps stated above to enter the page title, content, and save the page.

You can edit a page at any time provided that you have the edit permission on that page.

To edit a page, click Edit in the Page control area. Your page will switch to the edit mode.

Now, you can rename the page and edit the page contents. The toolbar in the edit mode will be changed to activate the following actions:

Details:

	Save the current page and go back to the view mode.
	Save the current page without sending notification to the watcher.
	Display the preview mode of the currently edited content. Previewing a page helps you verify the result of rendering the markup you just entered without saving.
	Open the Wiki syntax help page.
	Switch to the Rich Text (WYSIWYG) editor.
	Discard the current changes and go back to the view mode.

To move a page to another location:

1. Select the page that you want to move.

2. Click More in the Page control area, then select Move Page from the drop-down menu:

The form to select the destination page appears:

3. Select the destination page.

4. Click Move to commit.

1. Open the page you want to delete and select More in the Page control area.

2. Click Delete Page from the drop-down menu.

3. Click OK in the confirmation message to accept your deletion.

Viewing page information is accessible to users who have the View permission on that page. The page information provides you all details about related pages of the current page, the hierarchy structure of current page, the page history, and more.

To view the page information:

1. Select the page you want to view the information.

2. Click More from the page toolbar, then select Page Info from the drop-down menu.

All information of the opening page, including page summary, related pages, page hierarchy, recent changes, will be displayed.

This feature allows you to add pages related to your page. This function is only activated to users with the Edit permission and can be done in the Page Info view.

To add a related page to the page:

1. Click Add more relations, then select the related pages in the Select a page window.

2. Click Select to add the selected page to the list of the Related Pages.

The related pages of the opening page are displayed in the side pane as below:

The page history view allows you to know the changes of the page, the time and the author of the changes, the version number and restore a version to the current version.

To access the page history, just click View Page History in the Page Info view to open History Page.

You can do other actions with the page history. See more details in Work with Page Version.

Watching a page allows you to receive a notification message about any additions in the page.

1. Open the page you want to watch.

2. Click More in the Page control area, then select Watch from the drop-down menu.

To stop watching a page:

1. Open the page which have been watched.

2. Click More in the Page control area, then select Stop Watching from the drop-down menu.

1. Open the page you want to view its attachments.

2. Click attachment(s) link from the Page info at the bottom right corner of the opening page.

There are two ways to add an attachment to a page:

The first way: Use the attachment pane at the bottom of the page.

1. Click the Upload field. The upload window will appear.

2. Select a file from your local device and click the Open button. The File will be uploaded automatically then.

The second way: Use the WYSIWYG editor (Rich Text editor).

1. Select a page to which you want to add an attachment.

2. Select Edit at the Page Control area. For more details, see Edit a page.

3. Select the Rich Text editor on the page toolbar.

4. Click on the toolbar of Rich Text editor, then select Attached File... from the drop-down menu.

The Link form is displayed:

5. Select Current page, then double-click Upload new file.

6. Click Browse to select a file from your local device.

7. Click Upload. The form to edit the link parameters appears:

8. Edit the link parameters by typing the label and the tooltip for the link.

9. Click Create link to commit.

To delete an attachment, just click Delete corresponding to the attachment.

1. Click the name of the attached file. The download window appears.

2. Select Save file and hit OK to download.

1. Open the Link form as described above.

2. Click the attachment name in the attachments list of the current page or the other page (by selecting the All pages tab), then click Select.

3. Edit the link parameters.

4. Click Create Link to commit.

Link to an inserted image:

1. Click on the text editor, then click Insert Image...

2. Select an inserted image of the current page or click the All Pages tab to select an image attached to another page in the space.

3. Click Insert Image.

To view a specific version of a page, just click a version number in the Page History page. The selected version of that page will be displayed:

At a version of the page, you can do the following actions:

	Compare the current version with the selected one.
	Replace the current version with the selected version.
	Go to the Page History page.
	View content of the previous version.
	View content of the next version.

Wiki tracks histories of changes to pages by maintaining a version of the page each time it is modified. To compare two versions, select two checkboxes corresponding to each relevant version, then click . A page which shows the changes between these two versions will be displayed:

The changes between two versions will be marked with colors:

When you notice that there are changes in the current page version that you are not satisfied, you can rollback to an older version of that page quickly.

To restore an older version, click corresponding to your desired version in the Page History page.

To access to a group's Wiki Space:

The first way: Follow this method if you are a member of the group.

1. Click Group on the administration bar.

2. Select a group that has the page with Wiki portlet.

3. Click the page, for example, the Wiki page to redirect to the Wiki home of the group's space.

The second way: By following this method, you can browse a wiki page of any group's space.

1. Click Wiki on the Administration bar.

2. Append /group/$groupid$ to the end of the link in the address bar of the browser, in which "$groupid$ is the id of the group.

3. Press Enter.

For example: The URL to access to the space of the group "/platform/users" is as follows:

To access a user's Wiki space directly:

1. Click Wiki on the Administration bar.

2. Append /user/$username$ to the end of the link in the address bar of the browser, in which "$username$" is the username of the user.

For example: The URL to access to John's space is as follows:

To access your own Wiki space:

1. Click Dashboard on the Administration bar.

2. Select a page with the Wiki portlet to open your own space.

Each space has its own page tree navigation that allows you to view the parent-child relationships of the pages in the space.

To see the tree view of a space:

1. Browse the Wiki home of the space:

2. Click the '+' node next to each page family to open the branches of the tree.

3. Click the border to resize the tree view pane.

1. Enter a key word in the search box.

2. Select your desired page or space from the drop-down menu. You will be redirected to the selected page or space.

The Advanced Search function allows you to search with a key word in a specific space. This mode helps you limit the search results.

1. Enter a key term into the search box and hit the Enter key.

If the results are matched with the key word, the search results are displayed like the illustration below:

If no results matched with the key words, the search screen informs "there is no search result...!"

2. Click to select a space from the drop-down menu to define a scale where to search for the entered word.

3. Click Search.

For each space, you can manage page templates and change the syntax used.

To access the Space Settings:

1. Open a Wiki space.

2. Click Browse, then select Space Settings:

The Space Settings form will help you configure the syntax, template of pages and manage permissions for pages and spaces.