# Tracing Agent

Substation ES Tracing Agent processes requests for trace entries. It constructs the trace header information, formats the input, and writes the input to the selectable configured device.

Trace entries are individual events recorded at specific locations in the execution code path while Substation ES is active. A trace entry consists of a header and variable data. Trace entries are grouped into escalated or selectable categories. An escalated category stipulates that trace events are increased according to a value specified by the administrator. The selectable category specifies trace entries that are written at specific focus points within the execution thread of the Substation ES region.

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