##  Facet Keys Specific to Fact Sheet Types
Facet keys specific to certain types of fact sheets rely on the specific attributes or relations of a particular fact sheet type. For instance, the dataFlowDirection facet, which indicates the data flow direction of an interface, is available only for fact sheets of the Interface type. This specificity helps narrow down results to a particular fact sheet type.
In the GraphQL Explorer, you can switch between different fact sheet types. Each type has its own unique set of facet filters, offering more granularity in data filtering. As you switch between types, the available facet filters on the sidebar change, allowing you to access and apply unique filters to your data.
Understanding the types of fact sheets you're working with and the filters they support is key to effective data filtering. By leveraging this knowledge, you can apply the most relevant and precise filters, ensuring your data management and analysis tasks are efficient and accurate.
