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# Combine Engine Configuration Parameters

The Combine ESP engine identifies related events in different tracks and creates an output track where the information from all of the tracks is combined into a single output record.

This engine differs from the And engine because:

- It produces a single record for each record in the Input0 input track. This record contains copies of all related records from the other input track(s). In comparison, the And engine creates one output record for each pair of related records.
- Every record from the Input0 track will appear in the output, even if there are no related records in the other input track(s).

Configuration Parameter | Description
--- | ---
Input0 | The first input track. The output track contains one record for every record in this track.
InputN | The names of tracks that contain information that you want to combine with information from the input track specified by Input0.
LuaScript | The path of a Lua script that contains a function to determine whether a record from an `InputN` track should be included in the output track.
MaxTimeInterval | The maximum interval from a record in the Input0 track to a record in another track.
MinTimeInterval | The minimum interval from a record in the Input0 to a record in another track.
Type | The type of ESP engine to use. Set this parameter to `Combine`.

## Output Tracks

This engine produces a single output track, named `TaskName.Output`.

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