In Biber's "Harmonia Artificiosa" no. VII, a different version of scordatura notation is used. Biber uses a nine line staff. The clefs used are based on alto clef (imagining that you are playing a viola). The piece is written for a six-stringed instrument. The upper part of the staff supposes that you are playing on the upper four strings and the lower part that you are playing on the lower four strings (still imagining that you are reading the four strings of a viola in alto clef). This does mean that there are two ways of notating notes on the middle two strings but it quickly becomes apparent, when playing, what the correct reading should be.