IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
member-es-interval11 1. es : ES
2. e : E
3. e' : E
4. ev : E
(ev <loc e') ev = e' False & eeveev & eve'
By:
Auto THEN SplitOrHyps
THEN
Try
(Unfold `es-le` 0
(THEN
(((OrLeft THEN Complete Auto) ORELSE (OrRight THEN Complete Auto)))