Deciphering "XMLList querying syntax"

programming flash
1

Could someone help clarify what that “querying” end part of this XMLList is doing? I’m actually still quite new to using XML (I have been trying to avoid it)

var data:Array = [];
data = data.concat(parse(_xml.factory.metadata.**(|>@name == "*")**));
data = data.concat(parse(_xml.factory.variable.metadata.(|>@name == "*")));
data = data.concat(parse(_xml.factory.method.metadata.(|>@name == "*")));
new Analizer(data);