Interesting quirks about coding on mod_virgule: XML files must not begin with an empty line or it's a parse error. Parse errors are not handled well right now and looking at the header files for gnome-xml, it's not apparent how to get the parse error which occurred when a document is created. I'm not sure what a Pool is in the code, but I intend to find out sometime. If your code sigsegvs, it sucks. Java wins by a few orders of magnitude for actually giving you an valuable exception upon these type of errors.
FOAF updates: Trust rankings are now exported, making the data available to other users and websites. An external FOAF URI has been added, allowing users to link to an additional FOAF file.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!