The infamous Pen Tool
If you need a 2 button stylus to use with the Pen Tool – here is the STYLUS I recommend over the Surface stylus if you are doing digital art (especially 3D) or note taking.
This tool will help you remap the side button on the Surface Pen and the Wacom Bamboo Ink Stylus easily to use in Zbrush, Photoshop or any program where you want more control or just a simple “undo” function at your finger tips.