| b10 | b16 | field | type | size | bitfield | comments | 0 | 0 | xstUsrInitl | XCHAR[10] | | | pascal-style string holding initials of annotation author | 20 | 14 | ibst | short | | | index into GrpXstAtnOwners | 22 | 16 | ak | short | :2 | 0003 | unused | | | | short | :14 | FFFC | unused | 24 | 18 | grfbmc | uns short | | | unused | 26 | 1A | lTagBkmk | long | | | when not –1, this tag identifies the annotation bookmark that locates the range of CPs in the main document which this annotation references. | |
cbATRD (count of bytes of ATRD) is 30 (decimal), 1E(hex).