Downloaded an os x version which runs under WINE here.
Materials Thread [1]
rotation = command+left mouse
zooming = command+Ctrl+left mouse / Mouse wheel
panning = command + right mouse
UNDO = command+Ctrl+Z
tool settings = command+Ctrl+space
smoothing = Shift + left mouse
hide/show quickhelp = command + F1
hide show interface = CTRL + TAB
/Users/YOURUSER/Library/Application Support/Wine/prefixes/Sculptris_a5/drive_c/winebottler
open up config.txt
Change the values
window_width 1280
window_height 800
window_maximized 0
Save!
That should fit the 12” Cintiq