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# Factorio Runtime Docs Version 2.0.7

## SelectorCombinatorParameters :: table

#### Table fields

index_signal | :: SignalID | The signal to use.
The signal to use.
index_constant | :: uint | The signal index to use if not using a specific signal.
The signal index to use if not using a specific signal.
count_signal | :: SignalID | The signal to emit.
The signal to emit.
operation | :: string? | Must be one of `"select"`, `"count"`, `"random"`. When not specified, defaults to `"select"`.
Must be one of `"select"`, `"count"`, `"random"`. When not specified, defaults to `"select"`.
select_max | :: boolean | If the maximum value is used.
If the maximum value is used.