| Parameter | Meaning and Use |
| SYS | Requests comprehensive recording for six system events: I/O, SIO, SVC, program, external interruptions, and entry to recovery routines (RR). |
| SYSP | Is similar to the SYS parameter except that GTF prompts for particular events (e.g., address of I/O device or SVC number). |
| SYSM | Is similar to the SYS parameter except that minimal trace data are recorded for the six events. |
| SIO | Requests comprehensive recording for system SIO operations. |
| SIOP | Similar to the SIO parameter except that GTF prompts for the addresses of specific devices for which SIO events should be recorded. |
| IO | Requests comprehensive recording for all non-PCI I/O interruptions. To obtain recording of PCI interruptions, specify PCI. Both options may be specified. |
| IOP | Similar to the IO parameter except that GTF prompts for the addresses of specific devices for which IO interruptions should be recorded. |
| SVC | Requests comprehensive recording for all system SVC interruptions. |
| SVCP | Similar to the IO parameter except that GTF prompts for the specific SVC number for which interruptions should be recorded. |
| PI | Requests comprehensive recording for all program interruptions (1-19). |
| PIP | Similar to the PI parameter except that GTF prompts for the specific interruption codes for which data will be recorded. |
| EXT | Requests comprehensive recording for all external interruptions. |
| RR | Reqeusts that uses of recovery routines (FRRs and STAE/ESTAE routines) be recorded. The trace record is generated when the recovery routine returns control to the recovery termination manager (RTM). |
| DSP | Requests recording for the local dispatching of units of work (service request block (SRB) and TCB). |
| PCI | Requests that PCI interruptions be recorded in the same format as other requested I/O trace records. If specific I/O device addresses are specified through prompting records, the PCI interruptions will be recorded for the same devices. |
| SRM | Requests a trace entry each time that the system resource manager (SRM) is invoked. |
| TRC | Requests that traced events include those related to GTF processing itself. If not specified, GTF-related events will be excluded from the trace output. |
| USR | Requests that user data passed to GTF via the GTRACE macro be recorded. |
| END | This parameter indicated the end of the prompting records. |