Mention more explicitly that zone properties are not defined or described in the document
This is in response to issue #2, but maybe we need to remove mention of zone configuration via catalog zones altogether, which will follow in PR #6 .
In this PR it is also RECOMMENDED that catalog zone implementations do not use zone propertie name's starting with "cz-" to reserve this namespace for future documents.
This is in response to issue #2, but maybe we need to remove mention of zone configuration via catalog zones altogether, which will follow in PR #6 .
In this PR it is also RECOMMENDED that catalog zone implementations do not use zone propertie name's starting with "cz-" to reserve this namespace for future documents.