Metadata header component declarations.
<availability>Groups elements that describe the availability of and access to a bibliographic item,
including an MEI-encoded document.
<unpub>Used to explicitly indicate that a bibliographic resource is
unpublished.
Component declarations that are shared between two or more modules.
<distributor>Person or agency, other than a publisher, from which access (including electronic
access)
to a bibliographic entity may be obtained.
<pubPlace>Name of the place where a bibliographic item was published.
<publisher>Name of the organization responsible for the publication of a bibliographic item.