Provides an interface for the "nVenn"" algorithm (Perez-Silva, Araujo-Voces and Quesada (2018), <doi:10.1093/bioinformatics/bty109>). This algorithm works for any number of sets, and usually yields pleasing and informative Venn diagrams with proportionality information. However, representing more than six sets takes a long time and is hard to interpret, unless many of the regions are empty. If you cannot make sense of the result, you may want to consider 'UpSetR'.