I'm writing my O'Reilly talk into an article, and I'm fanatic about my
images looking good. See how nicely centered and anti-aliased that
little picture is? I use xfig to do
vector graphics, fig2dev to convert to PNM, then netpbm to scale the images
nicely. But netpbm was missing a tool to say "make the image this size
by padding it on all sides" (pnmpad isn't that smart). So as a
procastrination tool, I wrote up the ugly shell script pnmpadtosize. Unix at
its best!
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