mb event system 2 Sections EventSystems Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Def rcv(ltg) == inl(<l,tg>)

is mentioned by

Thm* es:ES, e:E, l:IdLnk, tg:Id.
Thm* kind(e) = rcv(ltg)
Thm* 
Thm* loc(e) = destination(l) & loc(sender(e)) = source(l)
[es-loc-rcv]

In prior sections: mb event system 1

Try larger context: EventSystems IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

mb event system 2 Sections EventSystems Doc