The vocabularies can be created/edited in the OpenCulturas standard with the OC-Admin role. You can access all vocabularies via Structure > Taxonomy > Overview. Ideas for creating the terms can be found in the FAQ linked below.
Registered users can then tag their content with the available terms. Starting with OpenCulturas version 1.4, the keywords will be made visible in the teasers.
Special cases: Articles and pages
The content types also offer type association, albeit with a different purpose. We thought it would be a good idea to be able to aggregate certain forms of articles or pages separately. For example, you could easily create and aggregate articles as press releases, or declare pages as project descriptions and have them collected on a project overview page.
Teasers for pages and articles then also contain a type assignment above the headline. There is an exception for magazine teasers: If a rubric has been selected here, the rubric is output instead of the article type. It is advisable to choose one of the two assignments (rubric or type) anyway.