IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
rel star of equiv12 1. T : Type
2. E : TTProp
3. EquivRel(T)(_1 E _2)
4. n :
5. 0<n 6. x,y:T. (xE^n-1 y) (xEy)
x,y:T. (xE^ny) (xEy)
By:
RecUnfold `rel_exp` 0 THEN Reduce 0 THEN SplitOnConclITE