Blogger label marked with Breadcrumb

Blogger Breadcrumb keywords: loop post.labels, label.isLast, itemprop='child', ...

summary

breadcrumb
itemscope='1'
itemtype='data-vocabulary.org/Breadcrumb'
breadcrumb/child
cond='data:label.isLast == "true"'
itemprop='child'
breadcrumb/child + id
id='blog-breadcrumb'
other/itemref --id-reference-microdata
itemref='blog-breadcrumb'
itemscope='1'
itemtype='data-vocabulary.org/Breadcrumb'
sample includable breadcrumb
breadcrumb test(crawl)
google-search-site:%:r