createVennObj           Create nVennObj from scratch
exampledf               Example data frame.
getVennRegion           Get elements in a region
listVennRegions         List elements in every region
oldShowSVG              Only exported for backwards compatibility with
                        toVenn
plotVenn                Create Venn diagram using the nVenn algorithm.
setVennRegion           Set number of elements in a region
showSVG                 Show Venn diagram. Automatically called from
                        plotVenn.
toVenn                  This function is deprecated, only kept for
                        backward compatibility.
