This document contains details on the implementation of spme features that may be useful in advanced applications.
In managing the dynamic trace structures, the system uses a number of predefined trace headers that cannot normally be changed by the user, but can displayed (by using, e.g., table). These headers are:
| Name | Format | Description |
| LASTTR | INTEGER | LASTTR=1 specifies last trace in ensemble. For other traces, LASTTR = 0 |
| _NUMREC | INTEGER | Number of records in the trace data segment |
| TIMSTRT | FLOAT | Some modules (e.g., reduce, static, stack) |
| _DTFRMT | INTEGER | Specifies trace data format |
| _DATLEN | INTEGER | The length of the trace data segment, bytes |
| SEQNO | INTEGER | Trace sequence numbers within the ensembles. |