R Under development (unstable) (2025-07-22 r88445 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2025 The R Foundation for Statistical Computing
Platform: x86_64-w64-mingw32/x64

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> 
> library(grid)
> require(gridSVG)
Loading required package: gridSVG

Attaching package: 'gridSVG'

The following objects are masked from 'package:grid':

    linearGradient, pattern, radialGradient

The following object is masked from 'package:grDevices':

    dev.off

> 
>     grid.polyline(x=outer(c(0, .5, 1, .5), 5:1/5),
+                   y=outer(c(.5, 1, .5, 0), 5:1/5),
+                   id.lengths=rep(4, 5),
+                   gp=gpar(col=1:5, lwd=3))
>   
> grid.export("polyline.svg")
> 
> proc.time()
   user  system elapsed 
   0.48    0.04    0.46