In Part 6 Chapter 5.3.4 Arrays it is written "The name of the element in the array shall be the type name."
For cases where a data type is mapped to another built-in type it is not clear which type name to use.

Examples are

• the simple Duration which is derived from Double
• simple OptionSet types like AccessRestrictionType which is derived from UInt16

Inside of a Variant it is clear, since a Variant supports only the built in types.
But it is unclear if a structure contains an array of e.g. Duration or AccessRestrictionType.

It is unclear if the encoded type is
a ListOfDuration with single elements with the name Duration or
a ListOfDouble with single elements with the name Double.

I would assume to use the built-in type, but for structures or enumerations within a parent structure it is pretty clear to use the direct type name and not the built-in type ExtensionObject or Int32.

Please clarify and update the specification text.