IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
member iff sublist1 1. T : Type
2. x : T 3. L : T List
4. i :
5. i<||L||
6. x = L[i]
f:(1||L||). increasing(f;1) & (j:1. [x][j] = L[(f(j))])
By:
InstConcl [x.i] THEN Try (Unfold `label` 0 THEN Reduce 0)