f{n} is just f{0..n}.

	Who Cites listify?
listify	Def  f{m..n} == if nm nil else f(m).f{(m+1)..n} fi  (recursive)
	Thm*  T:Type, m,n:, f:({m..n}T). f{m..n}  T List
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:

f{m..n}

has structure:

listify(f; m; n)

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