Citation Format Plugins
Citation Format Plugins are used as part of the Reading Tools, allowing readers to export the article citation in a variety of formats. Most journals do not modify these plugins.
Citation Database Connector Plugins
Citation Database Connector Plugins connect to citation databases for citation look up.
Citation Output Plugins
Citation Output Plugins implement citation standards and would take the place of the citation format plugins.
Citation Extraction Plugins
These plugins will extract field-level data from raw citations.