<extended-by> Extended-by Model
Identification of a BITS extension that the document claims to be following.
The <extended-by> element names a BITS extension (typically a superset) that a document claims to be following. The content of <extended-by> may be a name, such as “Legal-BITS”, or a URI. The element is repeatable so that more than one extension can be claimed.
To provide a more complete in-the-XML description of the tag set associated with a document, BITS added a Processing Metadata element (<processing-meta>). A <processing-meta> names (through attributes) the tag set, table model, and MathML options a document follows and (through elements) some of the modeling restrictions or extensions the document claims to follow.
Processing Metadata is not considered to be part of the content of a book, or part of the metadata for citing a book; it is metadata about how the XML is constructed — not about how the book content is structured. This metadata is information at the “file level” and thus not part of the metadata for the book, but inside the book as a peer to <book-meta>.
- The elements inside <processing-meta> name tag set extensions (superset) and restrictions (subset, secondary schema, etc.) that the XML document claims to follow. More than one restriction or extension is allowed.
- The attributes on <processing-meta> describe the modeling choices made by this document in terms of tag set family, table model, and math tagging.
This optional container element is used to hold the processing metadata elements, which describe processing information descriptive of the XML-tagged document (document instance). The <processing-meta> element contains the following elements:
- <restricted-by> — Identification of one of the guidelines or other restrictions (such as a tighter subset schema) the document claims to be following. The content of <restricted-by> may be a name such as “pmc”, “jats4r”, “sts4i”, or a URI, for example, the URL of a particular recommendation. The element is repeatable so that multiple restrictions can be claimed.
- <extended-by> — Identification of a BITS extension or superset that the document claims to be following. The content of <extended-by> may be a name, such as “Legal-BITS”, or a URI. The element is repeatable so that more than one extension can be claimed.
- <custom-meta-group> — To hold other processing metadata a BITS user might want to express in the XML file.
Models and Context
May be contained in
Text, numbers, or special characters, zero or more
<!ELEMENT extended-by (#PCDATA %extended-by-elements;)* >
Expanded Content Model