is mentioned by

Thm* n:, i:{1..n}. 0 = 0 & n = 0  False	[ite_rw_test]
Def b == if b True else False fi	[assert]

In prior sections: core

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