Source: Schema.org v30.1 vocabulary. Official masthead property definition.
What does masthead mean?
For a [[NewsMediaOrganization]], a link to the masthead page or a page listing top editorial management.
Parent properties
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status