IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
array seg wf11 1. T : Type
2. i :
3. j : {i...}
4. a : [T]Array
5. a.l = i & a.u = j 6. m : {i..j}
7. n : {m..j}
a[m..n] [T]Array
By:
Analyze 4 THEN Analyze 5 THEN Unfolds [`array_seg`;`array`] 0