TUI/Scripts/NICFPS/DataCube.py: Added widgets for initial and current index and number of passes. 	Modified so user sets delta Z intead of num steps. 					
TUI/Scripts/NICFPS/DataCube.py: Added widgets for initial and current index and number of passes.
	Modified so user sets delta Z intead of num steps.
					

r-owen/TUI,r-owen/TUI