To display additional slide information in Outline view by double-clicking the slide icon to the left of the desired underlined slide heading.

To show the previously hidden folders and files that are nested inside a branch of the folder tree.

Definition: To open a closed item in a tree structure. The Tree tabbed pane in the Nautilus file manager is a tree structure. To expand a folder in the Tree tabbed pane, click on the arrow next to the folder. Usage: Normal text rules. Example: You can expand and collapse the folders in the Tree tabbed pane.

In Outline View, reveals all of the selected slide's text if it has been collapsed previously.

In the Distributed Computing Environment (DCE), to display the contents of (open) a directory using the Cell Directory Service (CDS) Browser. Contrast with collapse.