IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
sublist pair T:Type, L:T List, i,j:||L||. i<j [L[i]; L[j]] L
By:
Auto THEN Unfold `sublist` 0 THEN Reduce 0
THEN
InstConcl [n.if n=0i else j fi]
THEN
Try (Unfold `label` 0 THEN Reduce 0)
THEN
Unfold `increasing` 0
THEN
Reduce 0