••• correlations library
A small library for creating quick drawings of correlation between elements.
You can draw elements, give them colors and names and define relations to other elements. Please take a look at the Processing example, included in the zip file (link below)
Update: XML-export and -import
There are two more functions implemented in the new version: Board.importXML(String fileName), Board.exportXML(String fileName). All Elements and theirs attributes (relations, positions, colors, ...) are saved in an XML file and can be imported into the sketch again.
for more information, please take a look at the java reference. You can download the library package including the source code and a little Processing example here.