This section defines the conformance criteria for an XQueryX processor that includes the Update Facility.
In this section, the terms MUST, MAY, and SHOULD are used as defined in [9 Conformance].
An XQueryX processor that claims to conform to this specification MUST implement the XQueryX syntax as defined in [E XML Syntax (XQueryX) for XQuery Update Facility 3.0] and include a claim of Minimal Conformance as defined in [9 Conformance]. In addition to a claim of Minimal Conformance, it MAY claim conformance to one or more optional features defined in [9.2 Optional Features].