Montreal Protocol (1973) and the international agreement signed (1985 & 1987). The treaty is structured around several groups of halogenated hydrocarbons that deplete stratospheric ozone. All of the ozone depleting substances controlled by the Montreal Protocol contain either chlorine or bromine (substances containing only fluorine do not harm the ozone layer). Some ozone-depleting substances (ODSs) are not yet controlled by the Montreal Protocol, including nitrous oxide (N2O) For a table of ozone-depleting substances controlled by the Montreal Protocol see: For each group of ODSs, the treaty provides a timetable on which the production of those substances must be shot out and eventually
Beyond Protocol the community project "After Protocol" as open source continuation. In a 2008 GameSpy preview, Beyond Protocol was hailed for its "Customizable units; incredibly deep strategy; economic wheeling and dealing; player democracy", while noting concerns about balancing. Beyond Protocol Beyond Protocol was a subscription based Sci-Fi Massively multiplayer online real-time strategy game (MMORTS) Computer Game developed by the American independent game developer Dark Sky Entertainment and released in November 2008. The 3D game modelled a persistent and player-driven fictional galaxy. Beyond Protocol was an entirely Player versus player (PvP) game, no Non-player characters (NPCs) exist within the game, all activities (trade,