mb event system 6 Sections EventSystems Doc
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RankTheoremName
2Thm* L:MsgA List. ma-is-empty((L))  [ma-is-empty_wf_join]
cites the following:
1Thm* L:MsgA List. (L MsgAForm[msg-form-join-list]
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
mb event system 6 Sections EventSystems Doc