I'm completely new to R, and I'd like to do something like this:

    > x=c(1,2,3)
    > plot(x,x)

At this point, R creates a file "Rplots.pdf", since the default device is
PDF and the default filename is "Rplots.pdf".  I know I can set the default
device like this:

    > options(device="png")

But is there a way to set the default device's default filename?

Thanks!

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