IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
es-kind-rcv es:ES, l:IdLnk, tg:Id, e:E.
kind(e) = rcv(l; tg)
isrcv(e) & lnk(e) = l & tag(e) = tg & loc(sender(e)) = source(l)
By:
Auto THEN Unfolds [`es-isrcv`;`es-lnk`;`es-tag`] 0 THEN HypSubst -1 0