SILKYPIX analyzes your photo to determine both bright and dark areas. With independent changes to highlights and shadows, dark areas that contain overshadowed details are adjustable to increase visibility of details. Lowering values then in bright areas may also increase visibility of detail that would otherwise be washed out.
Prior to the release of the SILKYPIX Series 9, the effects of the Highlight Slider were combined with the Shadow Slider. Now either can be manipulated independently.
Here is an original image taken in non-ideal lighting.
After making adjustments to both highlights and shadows, it is much improved.
Highlight Slider in the Exposure / Luminance Panel