R Under development (unstable) (2023-09-30 r85239 ucrt) -- "Unsuffered Consequences"
Copyright (C) 2023 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(lattice)
> 
> pdf("fontsize.pdf", pointsize = 5)
> 
> splom(iris, sub = "pdf:fontsize = 5")
> 
> trellis.par.set(grid.pars = list(fontsize = 5))
> splom(iris, sub = "grid.pars:fontsize = 5")
> 
> trellis.par.set(grid.pars = list(fontsize = 10))
> splom(iris, sub = "grid.pars:fontsize = 10")
> 
> trellis.par.set(fontsize = list(text = 15))
> splom(iris, sub = "grid.pars:fontsize = 15")
> 
> dev.off()
null device 
          1 
> 
> 
> 
> proc.time()
   user  system elapsed 
   0.65    0.09    0.73