Some definitions of interest.
label	Def t  ...$L == t
le	Def AB == B<A
	Thm* i,j:. (ij)  Prop
stype	Def S == {T:Type| x:T. True }
	Thm* S  Type{2}

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