IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
hlist ty def1 1. 'a : S
rep:(hlist('a) hprod((hnum 'a); hnum)).
type_definition(hprod((hnum 'a); hnum);hlist('a);is_list_rep;rep)
By:
TypeDefIso rep_list abs_list THEN StrongAuto
THEN
Try (Complete (Unfold `label` 0))