Def  == {i:| 0i }

is mentioned by

Def FIncr == {f | i:  if i=0  else {f(i-1)...} fi}

[fincr]

In prior sections: int 1 bool 1 sqequal 1

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