Set a Document as a Folder Introduction
An Introduction can be considered a folder cover that describes what's inside the folder. You can set any document, including uploaded files (e.g. an image), as an Introduction to the folder containing that document. The file content will be displayed when you open the folder.
To add an introduction to a folder
Navigate to the folder you want to add an introduction to.
Choose and open the documnent inside the folder that you want to set as an introduction.
Click ... and choose Set as introduction: