Permission to use, copy, modify and distribute the OLIF DTD, OLIF XSD and accompanying documentation for any purpose and without fee is hereby granted in perpetuity, provided that the above copyright notice and this paragraph appear in all copies. The copyright holders make no representation about the suitability of OLIF for any purpose. It is provided "as is" without expressed or implied warranty.
If you modify the OLIF DTD or XSD in any way, except for declaring and referencing additional sets of general entities and declaring additional notations, the modified DTD or XSD should be labeled as a variant of OLIF. See the OLIF maintenance documentation for more information.
Please direct all questions, bug reports, or suggestions for changes to the OLIF Consortium, see http://www.olif.net.