The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.
This document specifies a space-efficient encoding format for tiled geographic vector data. It is designed to be used in browsers or server-side applications for fast rendering or lookups of feature data.