importing several DTDs in the Schema Editor

can anyone tell me how to import several DTDs (DOCTYPEs)in the same Tamino Collection with the Schema Editor ? It’s possible to do it manually (Add Doctype) but not from DTDs ?!?

Thxs for your support,

Use the Schema Editor and create multiple element nodes under schema. And create multiple doctype nodes under schema that reference these root elements. Now you have one schema that defines multiple doctypes within one collection.