You can open the file detail view:
By clicking on the attached file in the task details.
By clicking on a file in the file explorer.
The detail view shows all relevant information about the file and is split into three areas:
The preview area, which allows you to navigate through files and manipulate the preview.
The preview menu, which allows you to open or close the sidebar, upload a new version, download the currently selected file, and add markers to comments. You can find additional actions in the "More actions " menu.
The sidebar, which allows you to view the file information and add comments to files. You can show or hide the sidebar with the icon in the preview menu.