The following specification is available on the Bora website.
Balau documentation and API references are available on the Bora website. The Boost licensed Balau source code is available from Bora's open source Git repositories.
The AGPL licensed BDML source pack is available from Bora's open source Git repositories.
BDML source pack Git repository
Documentation for the Bora document processor and BDML reference is available on the Bora website.