Breadcrumbs is a navigation aid and gives users a way to keep track of their locations. The term comes from the trail of breadcrumbs left by Hansel and Gretel in the popular fairytale.
Breadcrumbs typically appear horizontally across the top of a web page, usually below title bars or headers. They provide links back to each previous page the user navigated through to get to the current page or—in hierarchical site structures—the parent pages of the current one. Breadcrumbs provide a trail for the user to follow back to the starting or entry point. A greater-than sign (>) often serves as hierarchy separator, although designers may use other glyphs (such as »), as well as various graphical treatments.
Typical breadcrumbs look like this:
Home page > Section page > Subsection page
There are three types of web breadcrumbs:
PyLucid has a location based breadcrumb plugin, provide links back to each parent pages of the current one.
More information you can't found on the breadcrumb plugin documentation page.