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# Factorio Runtime Docs Version 2.0.7

## QualityCondition :: table or string

An item filter may be specified in two ways, either as a string which is a quality prototype name or as a table.

#### Table fields

quality | :: string? | The prototype name of the quality.
The prototype name of the quality.
comparator | :: ComparatorString? | The comparator for quality.
The comparator for quality.