Who Cites ndiff?
ndiff	Def a -- b == imax(a-b;0)
	Thm* a,b:. (a -- b)
imax	Def imax(a;b) == if ab b else a fi
	Thm* a,b:. imax(a;b)
le_int	Def ij == j<i
	Thm* i,j:. (ij)
lt_int	Def i<j == if i<j true ; false fi
	Thm* i,j:. (i<j)
bnot	Def b == if b false else true fi
	Thm* b:. b

Syntax:

a -- b

has structure:

ndiff(a; b)

About: IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html