Def one_one('a;'b;f) == x,y:'a. f(x) = f(y)  'b  x = y

is mentioned by

Def one_one == f:'a'b. one_one('a;'b;f)

[hone_one]

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