The BSD Documentation License (BDL) is a content license similar to the FreeBSD Documentation License allowing flexible modification and redistribution of content. The BDL was created to contain terms more generic to other projects as well as to reintroduce the 3rd clause of the BSD license that prohibits the use of documentation for endorsement purposes.
Redistribution and use in source (Docbook format) and 'compiled' forms (PDF, PostScript, HTML, RTF, etc), with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code (Docbook format) must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in compiled form (transformed to other DTDs, converted to PDF, PostScript, HTML, RTF, and other formats) must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The name of the author may not be used to endorse or promote products derived from this documentation without specific prior written permission. THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR ``AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.