Semantic Breadcrumb Links (SBL) will try to generate a breadcrumb trail if a property relation can be matched
including its relational directionality. > indicates a Has parent (or Is child of) relationship while
< describes the closest descendant for a Is parent of affinity.
It is required to specify a property search pattern (by default Has parent page is assigned
as special property to NS_MAIN) in order to find relationships between a subject and its
antecedents.
Foo > Bar -- [[Has parent page::Foo]] > Baz -- [[Has parent page::Bar]]
If a subject Baz declares a relationship with Bar and Bar itself specifies
a parental relationship with Foo then the breadcrumb trail for Baz will be resolved as
Foo > Bar. On the other hand, the subject Bar will display a Foo > Bar < Baz trail
indicating that Foo is a parent( > ) and Baz is a child ( < ) of Bar.
Using __NOBREADCRUMBLINKS__ on an individual page will suppress the display of a SBL
generated breadcrumb trail, yet it will not remove or alter the state of annotation related
values.
Details on available settings are decribed in the SBL configuration guide.