The TBD is a substructure of the PAP.
| b10 | b16 | field | type | size | bitfield | comments |
| 0 | 0 | jc | byte | :3 | 07 | justification code 0 left tab 1 centered tab 2 right tab 3 decimal tab 4 bar |
| tlc | byte | :3 | 38 | tab leader code 0 no leader 1 dotted leader 2 hyphenated leader 3 single line leader 4 heavy line leader | ||
| * | byte | :2 | C0 | reserved |
cbTBD (count of bytes of TBD) is 1.