M.sframe(k sends <l,tg>)
== L != 1of(2of(2of(2of(2of(2of(2of(2of(M))))))))(<l,tg>)  deq-member(KindDeq;k;L) 

latex

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clarification:

M.sframe(k sends <l,tg>)
== fpf-val(product-deq(IdLnk;Id;IdLnkDeq;IdDeq);
== fpf-val(1of(2of(2of(2of(2of(2of(2of(2of(M))))))));
== fpf-val(<l,tg>;
== fpf-val(x,L.deq-member(KindDeq;k;L)) 

latex

Definitions	M.sframe(k sends <l,tg>), z != f(x)  P(a;z), product-deq(A;B;a;b), IdLnk, Id, IdLnkDeq, IdDeq, 1of(t), 2of(t), b, deq-member(eq;x;L), KindDeq
FDL editor aliases	ma-sframe