spdx
For RelationTypes it is not clearly statet, which types are inverses of each other
currently https://github.com/spdx/spdx-spec/blob/development/v2.3/chapters/relationships-between-SPDX-elements.md does not explain, that DEPENDENCY_OF and DEPENDS_ON are inverses of each other. Making that explicit and stating that $A DEPENDENCY_OF $B is equivalent to $B DEPENDS_ON $A would be helpful. There are also others that have this property. And there is also COPY_OF which is the inverse of itself.
Agree this needs to be improved, but we're missing a PR to update the documentation at this point, and relationship directionality are being revisited in 3.0, so moving this issue to here.
Documentation has been improved in 3.0 - closing this issue.
If there is any remaining concerns, please open a pull request or a specific reccomendation.
