Def SQType(T) == x,y:T. x = y  {x ~ y}

is mentioned by

Thm* SQType(Atom)	[atom_sq]
Thm* SQType()	[bool_sq]
Thm* SQType()	[nat_sq]
Thm* SQType()	[int_sq]

Try larger context: StandardLIB IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html