mb event system 6 Sections EventSystems Doc
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Def match(l;t;t')
Def == (||snds(l;t)||||rcvs(l;t')||)
Def == (||rcvs(l;t')||<||snds(l;t)||+||onlnk(l;m(source(l);t))||)

is mentioned

In prior sections: mb event system 3

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

mb event system 6 Sections EventSystems Doc