Table 335

+=====-========-========-========-========-========-========-========-========+
|  Bit|   7    |   6    |   5    |   4    |   3    |   2    |   1    |   0    |
|Byte |        |        |        |        |        |        |        |        |
|=====+=======================================================================|
| 0   |                           Element type code                           |
|-----+-----------------------------------------------------------------------|
| 1   | PVolTag| AVolTag|                      Reserved                       |
|-----+-----------------------------------------------------------------------|
| 2   | (MSB)                                                                 |
|-----+---                    Element descriptor length                    ---|
| 3   |                                                                 (LSB) |
|-----+-----------------------------------------------------------------------|
| 4   |                              Reserved                                 |
|-----+-----------------------------------------------------------------------|
| 5   | (MSB)                                                                 |
|-----+---                                                                 ---|
| 6   |                Byte count of descriptor data available                |
|-----+---                      (this page, n - 7)                         ---|
| 7   |                                                                 (LSB) |
|=====+=======================================================================|
| 8   |                                                                       |
|- - -+---                     Element descriptor(s)                       ---|
| n   |                                                                       |
+=============================================================================+