Here’s a clear, professional write-up on , suitable for a documentation page, team guide, or internal knowledge base. Confluence Collapsible Sections: A Guide to Cleaner, More Usable Pages In Confluence (both Data Center and Cloud), collapsible sections (often created using the Expand macro) allow you to hide detailed or secondary content behind a clickable heading. When a user clicks the heading, the content expands inline—without reloading the page or navigating away.