What action should follow after undocking the document viewer?

After undocking the document viewer, the appropriate action is to click "Return to Document List" to close the viewer. This step is essential because it allows users to effectively transition back to the document repository or list of documents, ensuring that they can easily navigate through other available documents or return to the main interface of the application.

Choosing to close the viewer by clicking "Return to Document List" is a user-friendly action that maintains workflow continuity. Users often undock viewers to work with documents without losing sight of their list, so returning to the document list is a logical next step when they finish or want to switch to another document.

The other actions, such as saving changes, closing the browser, or shutting down the application, may interrupt the workflow or lead to unnecessary complications. Saving changes might not be needed if no edits were made. Closing the browser would terminate the entire session, and shutting down the application is excessive when the user simply wants to navigate back to the document list.