The performance data files use abbreviations in the field and byte data tables.
These abbreviations include.
| Abbreviation | Description |
|---|---|
| Primary files | These files are related to and generated from the category. |
| C | Character in the Attributes column. |
| H | Hexadecimal in the Attributes column. |
| PD | Packed decimal in the Attributes column. |
| Z | Zoned decimal in the Attributes column. |
| IOP | Input/output processor or I/O processor. The processors that control the activity between the host system and other devices, such as disks, display stations, and communication lines. |
| DCE | Data circuit-terminating equipment. |
| MAC | Medium-access control. An entity in the communications IOP. |
| LLC | Logical link control. An entity in the communications IOP. |
| Beacon frame | A frame that is sent when the ring is inoperable. |
| Type II frame | A connection-oriented frame (information frame) used by Systems Network Architecture (SNA). |
| I-frame | An information frame. |
| B | The DDS binary data type of 4 digits, which is 2 bytes, in the Attributes column. |
| G | Graphic - used to hold double-byte Unicode data. |