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 | |
+=============================================================================+