Some definitions of interest.
hanoi_PEG	Def  Peg == {1...3}
	Thm*  Peg  Type
hanoi_seq_deepen	Def  (s(?) {to n}  h {to n'})(x) == s(x) {to n}  h {to n'}
	Thm*  a,z:, n:, s:({a...z}{1...n}Peg), n':. Thm*  nn' Thm*   Thm*  (h:({n+1...n'}Peg). (s(?) {to n}  h {to n'})  {a...z}{1...n'}Peg)
int_iseg	Def  {i...j} == {k:| ik & kj }
	Thm*  i,j:. {i...j}  Type
nat	Def   == {i:| 0i }
	Thm*    Type
le	Def  AB == B<A
	Thm*  i,j:. (ij)  Prop

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