mb event system 3 Sections EventSystems Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Def Msg_sub(l; M) == {m:Msg(M)| haslink(l; m) }

is mentioned by

Thm* the_w:World, l:IdLnk, e:E. sends(l;e)  Msg_sub(l; the_w.M) List[better-w-sends-wf]

In prior sections: mb event system 2

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

mb event system 3 Sections EventSystems Doc