Source: Schema.org v30.1 vocabulary. Official specialty property definition.
What does specialty mean?
One of the domain specialities to which this web page's content applies.
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