The Text Encoding Initiative - One Document Does it all (TEI ODD) is a TEI XML-conformant specification format that allows creating a custom TEI P5 schema in a literate programming fashion. A system of XSLT stylesheets called Roma was created by the TEI Consortium for manipulating the ODD files.
A file is considered to be a TEI ODD document when either of the following occurs:
The schema used for these documents is located in ${frameworks}/tei/xml/tei/custom/schema/relaxng/brown_odds.rng, where ${frameworks} is a subdirectory of the Oxygen XML Developer plugin install directory.
There are two default catalogs for TEI ODD document type: