No Dgidx flags are needed to configure the Thesaurus features.

Thesaurus entries are automatically enabled for use during text indexing and during MDEX Engine search query processing. In addition, there is no MDEX Engine configuration necessary to configure thesaurus information.

The dgraph --thesaurus_cutoff flag can be used to tune performance associated with thesaurus expansion. By default, this flag is set to 3, meaning that if a search query contains more than 3 words that appear in "From" entries, none of the query terms are expanded.

No Presentation API development is necessary to use the Thesaurus feature.