The Sidebar contains the following buttons:
Find and replace: Open the Find and replace pane.
Text styles and numbered headings: Open the pane for working with text styles and numbered headings.
Recovered files: Open the document backups pane. The button is displayed if there is at least one unsaved copy.
Header settings or
Footer settings: Open the header and footer settings pane. The button is displayed when the footer or footer is selected.
Macros: Open the Macros pane. The button is displayed if the file contains at least one macro.
If a document is open in the cloud, the Sidebar displays avatars of co-authors who are working on that document with you at the same time.