In addition to descriptive metadata, the digital lab also creates
structural metadata. This type of data is necessary for complex objects
such as books, archival folders, and archival documents that consist of
more than one page. Structural metadata preserves the physical
and/or logical structure of such complex/multi-page objects in a
digital environment. It allows users to page through a faithful
reproduction of the original online. The digital lab uses METS (see
METS Metadata encoding and transmission standard, 2010) as the
standard for structural metadata.