title: breadcrumb.phtml file path?
body: <p>I am still trying to understand the themeing engine of magento by studying a theme. im my theme there is breadcrumb pthml file in templates/page/html folder which manipulates the bradcrumbs. How does magento know about the file? does the page/html folder is standard.
  and what is the role of the
  
   files do in page.xml</p>