• Tail size only applies to two methods with linear stretch and excluding of the tails
• Enhancement: graphs showing the effect of the current enhanceent
• The preview image shows a quick look at the method applied to the center of the current image.
• Force screen redraw keeps this form if you want to see full effects before leaving the form
• Quick redraw will redraw the entire map when a change in parameters is made; otherwise just the preview window will redraw. 
• Ignore 0 for histograms: this is usually the missing data flag, for voids with no data such as thr triangular gaps with Landsat scenes.

Band: select multiband or single band on the first tab.