As their lessons are controlled by use of [http://en.wikipedia.org/wiki/Digital_rights_management digital rights management methodologies] germane to commercial practice, they are not available for [[study]] in the [[Nordan Symposia]]. | As their lessons are controlled by use of [http://en.wikipedia.org/wiki/Digital_rights_management digital rights management methodologies] germane to commercial practice, they are not available for [[study]] in the [[Nordan Symposia]]. |