IF YOU CAN SEE THIS go to http://www.cs.cornell.edu/Info/People/sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
rel star transitivity T:Type, R:(TTProp), x,y,z:T. (x (R^*) y) (y (R^*) z) (x (R^*) z)
By:
Unfold `rel_star` 0 THEN Reduce 0 THEN ExRepD THEN InstConcl [n1+n]