by Andrie de Vries
Have you noticed that most R help does not contain any images? Historically, this was for a good reason: most programming language help assumes that you use the system on a text-only system, e.g. a headless linux server. If your system has no graphical capabilities, but the help contains images, then the help itself can become confusing.
That said, most R users use their help on a system with full graphical capabilities. Thus the R core team updated R itself in version 2.12 to have the ability to include images in your help.