inspector pane
An area on the right side of the window when Compressor is in Current view. When you select a preset, location, batch, job, or other item anywhere in Compressor, you can view more information about it or customize its parameters in the inspector pane. The contents of the inspector pane change depending on the item you select.
To open or close the inspector pane, click 
in the upper-right corner of the Compressor window.