Nuprl Lemma : w-tagged_wf 0,22

the_w:World, tg:Id, mss:Msg List. w-tagged(tg;mss Msg List 
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DefinitionsWorld, Msg, w-tagged(tg;mss), w.M, filter(P;l), a = b, mtag(m), Msg(M), x:AB(x), t  T, Id
LemmasId wf, Msg wf, mtag wf, eq id wf, filter wf, world wf

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