Custom code allows you to create Geneious operations that do almost anything. The Workﬂow custom code automatically inserts the surrounding import statements for the complete Geneious API and a class framework around the methods you implement here. Additional import statements can be provided prior to the ﬁrst method. Documentation for the API is available at Geneious API. For more advanced programmatic access to Geneious (for example creating importers, exporters or viewers), please download and refer to the Geneious Plugin Development Kit.