| b10 | b16 | field | type | size | bitfield | comment |
| 0 | 0 | fn | short | used internally by Word | ||
| 2 | 2 | fcSepx | FC | file offset in main stream to beginning of SEPX stored for section. If sed.fcSepx == 0xFFFFFFFF, the section properties for the section are equal to the standard SEP (see SEP definition). | ||
| 6 | 6 | fnMpr | short | used internally by Word | ||
| 8 | 8 | fcMpr | FC | points to offset in FC space of main stream where the Macintosh Print Record for a document created on a Mac will be stored |
cbSED (count of bytes of SED) is 12 (decimal), C (hex).