(A-IWDSU-6566): New abstract node.

(A-IWDSU-6566): New abstract node.
(U+6566): Add `<-denotational' for A-IWDSU-6566.
(U-0002D8F8): New character; use `<-denotational' for A-IWDSU-6566;
use `<-denotational@usage' for BUCS+6566.
(U-00022FE9): Use `->denotational' and `->subsumptive'.
(A-cgnU+23026): New abstract node.
(U-00023026): Use `->denotational' and `->subsumptive'; use
`<-denotational' for A-cgnU+23026; use `<-denotational@usage' for
BUCS+6566.
(DJT-04317): New character; use `<-denotational' for A-cgnU+23026; use
`<-denotational@usage' for BUCS+6566.
(A-CB10240): New abstract node; use `<-denotational' for A-cgnU+23026;
use `<-denotational@usage' for BUCS+6566.
(CB10240): New character; use `<-denotational' for A-CB10240.