xmlns:atom="http://www.w3.org/2005/Atom"
3.Application for registration of charges other than light obstruction notices
4.Application for registration of a light obstruction notice
6.Variation and cancellation of registrations other than in respect of a light obstruction notice
7.Variation and cancellation of registrations in respect of light obstruction notices
13.Determination by the registrar of particular electronic means of communication, etc