No dimension configuration is necessary for query refinement.
Assuming that a dimension is created in Developer Studio and that the dimension is used to classify records, the corresponding dimension values will be available to create or refine a query. The only exception is if a dimension is flagged as hidden in Developer Studio.
If a dimension is created and used to classify records, but no records are classified with any corresponding dimension values, that dimension will not be available as a refinement, because it is not related to the resulting record set in any way.
There are no Dgidx flags necessary to enable displaying refinement dimensions. If a dimension has been created and used to classify records, and has not been flagged as hidden, that dimension will automatically be indexed as a possible refinement dimension.
There are no MDEX Engine configuration flags necessary to enable the basic displaying of dimension refinements. However, there are some flags that control how and when these dimension refinements are displayed. These flags are documented in the appropriate feature sections (such as dynamic ranking).
