I'd imagine that it's so far out of date as to be almost useless ;)

3 ways to proceed

1) wander through all the technical docs for [url=http://doc.b2evolution.net/v-1-10/plugins/Plugin.html]plugin[/url] / [url=http://doc.b2evolution.net/v-1-10/evocore/Plugins.html]plugins[/url] classes and [url=http://doc.b2evolution.net/v-1-10/evocore/_blogs---inc---_misc---_plugin.funcs.php.html]plugin functions[/url]
2) crack open any plugin that does something similar to what you want and play with the code
3) take a look at baluptons [url=http://forums.b2evolution.net/viewtopic.php?t=12172&highlight=]sample renderer[/url]

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