# Wiki The wiki tool lets you and your learners collaboratively create and edit web pages within the course. It is useful for group projects, shared knowledge bases, and collaborative writing exercises. ## How the Wiki Works A wiki is a collection of interlinked web pages that anyone with permission can edit. In Chamilo: * Each course has its own wiki * Pages can be linked to each other using wiki-style links * All edits are tracked with a revision history * Previous versions can be compared and restored ## Creating a Wiki Page 1. Open the **Wiki** tool from the course homepage 2. Click **Add a new page** 3. Enter a **page title** 4. Write the page content using the rich-text editor 5. Save To link to another wiki page from within the editor, create a link using the target page's title. ## Editing Pages Anyone with edit permissions can modify a wiki page: 1. Open the page you want to edit 2. Click the **Edit** Edit button 3. Make your changes in the editor 4. Add an optional **edit comment** describing what you changed 5. Save ## Revision History Every edit creates a new revision. You can: * **View history** — See a list of all revisions with timestamps and authors * **Compare versions** — See what changed between two revisions * **Restore a version** — Revert the page to a previous revision if needed ## Managing the Wiki As the course teacher, you can: * **View all pages** — See a list of all wiki pages in the course * **Find orphan pages** — Identify pages that are not linked from any other page * **Delete pages** — Remove pages that are no longer needed * **Monitor contributions** — See who edited which pages and when ## Tips * **Use the wiki for group projects** — Assign each group a wiki page to collaboratively build their deliverable * **Create a course knowledge base** — Build a reference wiki with key concepts, and encourage learners to contribute * **Review edit history** — The revision history lets you assess individual contributions in collaborative work