Active Band selects the current band to be adjusted. Center Freq. adjusts the center frequency for the current band. Gain adjusts the amount of cut or boost applied at the center frequency for the current band. Bandwidth adjusts the range of frequencies, above & below the center frequency, which are also affected by the current band. These settings may also be adjusted by dragging the band controls shown inside the graph. Dragging the white dot affects both Center Freq. & Gain. Dragging either yellow dot affects Bandwidth. Flatten Band & Flatten All change the band(s) Gain to '0' (flat). Bypass Band & Bypass All disable the band(s) without changing settings. Drag Points turns on/off the band controls, revealing the resultant curve only. Band highlights the current band inside the graph.
Right-clicking over certain settings will provide a menu of additional options.