With the buttons "Prev" and "Next" present, the semantics of "Back" is unclear. Normally, "Back" is associated with the back button of browsers bringing one to the last page. When I press "Next", I would expect "Back" to go back to the previous file.
To avoid confusion, I would propose to rename "Back" to "Overview".
With the buttons "Prev" and "Next" present, the semantics of "Back" is unclear. Normally, "Back" is associated with the back button of browsers bringing one to the last page. When I press "Next", I would expect "Back" to go back to the previous file.
To avoid confusion, I would propose to rename "Back" to "Overview".