Frontmatter reference

A value (35 passages, no note) of a reference (30 passages, no note)-typed attribute (4 passages, no note) of the frontmatter, reads, roles, rules, consumers, affects, broader among others, that names another note by its identifier, by its path relative to the source root, or by its exact title. The reference produces a link at confidence 0.90 whose relation the attribute declares, never overturned by inference. A value that matches nothing, or several notes by title, yields W-REF-UNRESOLVED; one that reaches a note of a type the relation (note: Relation) does not allow yields E-META-REL.