discordatura

[Jean-marc LEGRAND]

Hi list !

I'm typesetting a piece from Tobias Humes' Musical Humors for the viol. Some 
pieces are tuned "as
the Bandora", which means that the common way to tune a viol has to be changed. 
In the classical way
, the special tuning is indicated before the first "clef", as a chord of blacks 
noteheads (without
notebar). How can I reproduce that in my score, please ?

Regards