IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
nth tl wf1122 1. A : Type
2. i : 3. 0<i 4. i-10 (as:A List. nth_tl(i-1;as) A List)
5. i0
6. as : A List
7. 0<i nth_tl(i-1;tl(as)) A List
By:
BackThru 4
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
0 
(
as:A List. nth_tl(i-1;as) 
A List)
nth_tl(i-1;tl(as)) 
