yas 07 #7/15 Bouler zin vever 

Vever tracing is performed at the beginning of major ceremonies in some parts of the country, particularly in the Petro rite. Symbols of the loas served by the particular family are drawn on the ground to invite the loas to descend and participate. As a guidance, notice that there is a main designer attended by a lit candle. The assistants follow by adding the color embellishments.