/*
* call-seq:
* [](tag_name)
*
* Get ElemementDescription for +tag_name+
*/
static VALUE get_description(VALUE klass, VALUE tag_name)
{
const htmlElemDesc * description = htmlTagLookup(
(const xmlChar *)StringValuePtr(tag_name)
);
if(NULL == description) return Qnil;
return Data_Wrap_Struct(klass, 0, 0, description);
}