This template makes easy to generate PDF file to read it on Ebook-Reader. In fact I'd trained it on Kindle, so perhaps it would be reasonable to correct the margins if needed.
The main problem with PDF's on 6-inches screens is lack of PDF-reflow function, or this function working badly. Why not just generate the PDF file well-fitted to the screen?
Template of R Journal from http://journal.r-project.org/
Originally written by Kurt Hornik and Friedrich Leisch with subsequent edits by the editorial board.
Copyright (C) 2010 by the R FoundationCopyright (C) 2013 by the R Journal