This report describes several R packages that allow
HTML content to be rendered as part of an R plot.
The core package is called 'layoutEngine', but that package requires
a "backend" package to perform HTML layout calculations.
Three example backends are demonstrated: 'layoutEngineCSSBox',
'layoutEnginePhantomJS', and 'layoutEngineDOM'.
We also introduce two new font packages, 'gyre' and 'courier'.