Source: Schema.org v30.1 vocabulary. Official pageStart property definition.
What does pageStart mean?
The page on which the work starts; for example "135" or "xiii".
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