I would like to suggest the implementation of a “turn on/off” check box for “hiding/appering” spectrum windows. This would be vy enjoyable to reduce the size of WFview window (if you do not wish to see the spectrum window i.e. use only the radio control).
We will have this soon. A major rework of the UI is taking place which will allow users to customize the layout and even pop the spectrum out to a separate window (which can be turned off or made very small).