Def AB == B<A

is mentioned by

Thm* x,y:. xy  xy	[assert_of_le_int]
Thm* b:. 0b2i(b) & b2i(b)1	[b2i_bounds]

In prior sections: int 1 core

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