2.2.4.3 Array of Context Handles
These extensions extend the use of context handles (as specified in [C706] section 4.2.16.6), by allowing arrays of context handles.
Context handles MUST be parameters, as specified in [C706] section 4.2.16.6. They are valid as an array element but MUST NOT be structure or union members and MUST NOT be the base type of a pipe.<49>