8e22084c_Nucleus___Plugin_API_usPlugin__redefinable_methods__Explanation
[Method Signature] doSkinVar($skinType) [Explanation] 
When plugins are called using the <%plugin(...)%>-skinvar, this method will be called. the $skinType parameter contains the type of skin (item, archive, ...) from where the plugin is called. Don't get confused by the fact that there's only one parameter. Multiple parameters can still be passed. More info on implementing the doSkinVar method. By default, this method does no output at all.
Nucleus - Plugin API
Explanation