To make the management of information in Confluence easier, information should be stored in one location and one location only. When there is the need for changing this information it requires the change to be applied only to one location. That is easy from the author's point of view.

On the other side is the reader who needs to see this piece of information in different contexts, that is on different pages. To make this information, that is stored in one location, visible on in multiple pages, the page author uses a tool called transclusion (or excerpt/excerpt include in Confluence lingo). This transclusion provides an invisible link to the content on another page. Whenever the content is updated on its page, this change is immediately (at request time) visible on the pages that transclude this content.

If you happen to transclude a section hierarchy and not just plain text or a graphic with an explaining paragraph, the level of the section titles need to be adjusted to the level in the transcluding page. We call this process of adjusting the heading level 'heading level transposition ' or 'transposition' for short. This feat is done by the PDAC1 automatically. This short tip shows you how.