Penpower Picasso (Win/Mac) - Manual (Page 13)

Current Pressure: You can see the current pen pressure at this
bar when you press the pen against the Picasso tablet.
Pen Buttons setting: You can change the function of each
button on the pen.
Tip Double Click Distance: This slider determines how long
the distance between double clicks is. We suggest to keep it at the
default setting.
Default Button: This button is to reset all sliders and settings to
the “Default” setting.
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Tablet Preferecnes Setting: Mapping