IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
num iso312 1. x : 2. P:(). P(zero_rep) & (n:. P(n) P(suc_rep(n))) P(x)
3. n : 4. x':. n = rep_num(x')
x':. suc_rep(n) = rep_num(x')
By:
((Analyze 4 THEN DTerm (x'+1) 0) THEN (UnfoldFirst `hrep_num` 0)) THEN Simp
THEN
StrongAuto
THEN
Try (Complete (Unfold `hnum` 0))