Changes in version 2.2.1: o Plotting now longer accepts border.lwd or border.col. Instead of border.col use color. Instead of border.lwd, you need to use the renderGraph/layoutGraph interface. This fixes a long standing bug where Rgraphviz writes illegal dot files. unitTest has been added. o bugfix to renderNodes (used in renderGraph) for nodes with shape = "triangle". It now works. o bugfix to renderNodes (used in renderGraph) for using node-specific lwd and shapes either "triangle", "ellipse" or "circle". It now works. Changes in version 2.1: o Rgraphviz now requires Graphviz >= 2.16. o Added graphvizCapabilities() that reports the capabilities of Graphviz. This requires Graphviz >= 2.28 and returns NULL if the Rgraphviz installation does not support it. o Rgraphviz now comes bundled with Graphviz 2.28, greatly simplifying installation. o Numerous bugfixes for bugs introduced in the 2.x.x versions.