DwerftAnnotationType VisualContent This annotation specifies visual content. Dwerft First version within the Dwerft project 2019 1 AudioContent This annotation specifies audio content. Dwerft First version within the Dwerft project 2019 1 Original Tone This annotation specifies the original tone. Dwerft First version within the Dwerft project 2019 1 DataContent This annotation specifies data assigned to it. Dwerft First version within the Dwerft project 2019 1