Source: Schema.org v30.1 vocabulary. Official preOp property definition.
What does preOp mean?
A description of the workup, testing, and other preparations required before implanting this device.
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