Link Filters vs Term Filters

There are two kinds of filters in OBO-Edit: term filters and link filters.

Term filters match ontology "terms". Things like relations, instances and classes can be matched by a term filter.

Link filters match links between terms. This does not mean that a link filter matches two terms. A link filter will never match any terms. It will only match links between terms.

A link can be thought of as a triplet that consists of a child term, a relationship type, and a parent term. This guide uses the following notation for describing a link: [child term] --[type]--> [parent term]. An is_a link between "organ growth" and "growth" would be written as: "organ growth" --is_a--> "growth".