the Kile editor
tidy up the rgl hook function
the blog post by Paolo Sonego
closes #436: use cairo_pdf() to record graphics
typo
add a tex.se post
github gist uses tables, and the line number cell will be too wide if td has width 33%, e.g. http://yihui.name/knitr/demo/pretty/
a notebook post by Nacho Caballero
simplify the highlighting demo of function sources