Nothing
library(grid)
library(gridSVG)
dev.new(width=6, height=6)
grid.rect(gp=gpar(col="black", fill=NA))
set.seed(1000)
grid.multipanel(vp=viewport(w=.7, h=.7, gp=gpar(col="black", fill=NA)),
newpage=FALSE)
grid.export("plot.svg")
dev.off()
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