The titletrail tag displays in a standardized format and has a few parameters to control its output. Format = Page You're On » Parent Page » Top Level Nav » Site Name
Custom Title Field
channel:title="channel:custom_field|channel_2:custom_field_2", defaults to entry title (when unset)
Uses a specific custom field per channel instead of the default title variable.
entry_id="XX", defaults to current page's ID
Specify a trail to show
Output = "Site Name » Parent Page » Page You're On"
Spaces are automatically added around the element for you.
site_name="yes", defaults to no
Adds your site name to the beginning of the trail.