The Dataset Information window can be opened with the Windows>>Dataset Information menu item (Ctrl+I).
It displays the content of the .set file (when present on disk) corresponding to the current dataset shown in the Source Image display
It is a floating window (it is always on top of the other windows) and can be resized, minimized or closed.
Its content can be selected and copied, in order to paste it into another document, or the Copy Data shortcut can be used to save a picture of the currently displayed content.