Documentation > Plugin Documentation > WPSSO Core DocumentationNotes and Documentation December 29, 2013Updated on January 20, 2023 JS Morisset Notes and documentation for the WPSSO Core plugin. Developer Resources Actions Constants Filters Filter Examples A Custom Field Value for a Schema Property Detect YouTube URL Links as Videos Exclude Schema Markup by Post Type Fix ‘hentry’ Errors in your Theme Templates Modify the Default Article Sections List Modify the aggregateRating Property The $mod Variable Inline Variables Multisite / Network Support