Hi Paul In https://mirrors.edge.kernel.org/pub/linux/kernel/people/paulmck/perfbook/perfbook.html, There is a sentence "All attempts to generate epub formats for small-format ebook readers have produced horrible results, but if you know of something that works, please don't keep it a secret!". Now that "make eb" and its variants can generate PDF for ebook readers (C6 paper), it might better to update this. C6: 114mm x 162mm (4.49in x 6.38in)
