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‘fisher.test()’ had a buglet: If arguments were factors with unused levels, levels were dropped and you would get an error saying that there should be at least two levels, inconsistently with pre-tabulated data. (Reported by Michael Fay).
The ‘pdf()’ device only includes the definition of the sRGB colorspace in the output file for the ‘"rgb"’ colormodel (and not for ‘"gray"’ nor ‘"cmyk"’): this saves ca 9KB in the output file.