119 The fundamental principle in the field of treaties and territorial amendments is the so-called `rule of cross-border postponement of the treaty`, which means that a treaty, together with the territory, passes to the successor State, thus leaving the territory of the predecessor State. This rule can be considered as a rule of the right of habit of peoples and is also taken up in Article 15 of the VCSS-T. This principle has served as a general rule in all of Germany`s international treaties and has been dealt with in Article 11 of the Treaty on definitive arrangements in respect of Germany ([signed on 12 September 1990, entered into force on 15 March 1991] 1696 UNTS 115; Germany, association of). Article 11 of the Treaty on definitive arrangements in respect of Germany provided roughly that those treaties are not only valid, but that their application has been extended to the territory of the former German Democratic Republic. Generally speaking, the application of this rule, although widely accepted, is not without difficulties and some problems may arise, such as for example. B the implementation of certain localised contracts. 23 However, a number of categorisations or distinctions between contracts have been proposed by academic or practising lawyers, on the basis of the purposes for which contracts exist or of certain effects which they may have. These categorizations are only for the convenience of grouping certain types of contracts in relation to common practices or content under development (e.g. B multilateral environmental agreements [MEAS"); Environment, multilateral agreements). International environmental law, in particular, has established a creative type of international contracting by using so-called "framework" and "roof" conventions that define the general rights and obligations of the parties (framework agreements). A more concrete set of rights and obligations, as well as new developments in the areas covered by the framework and framework conventions, will be complemented by protocols or other agreements. These are independent international treaties (such as the Vienna Convention on the Protection of the Ozone Layer [adopted on 22 March 1985, entered into force on 22 September 1988] 1513 UNTS 324; "VCPOL") and the Montreal Protocol on Substances that Deplete the Ozone Layer (adopted on 16 September 1987, entered into force on 1 January 1989) 1522 UNTS 3; "Montreal Protocol"). Annexes or annexes may also be supplemented by such framework agreements (see z.B.
the International Convention for the Prevention of Pollution from Ships, 1973 [signed on 2 November 1973, entered into force on 2 October 1983] 1340 UNTS 184 [MARPOL Convention], supplemented by six annexes). 121 As regards the unification of States, the dissolution of a State and the separation of part of a State, the VCSS-T generally applies a principle of automatic continuity of contracts, that is to say, contracts which were in force as regards the territory to which the succession applies. the successor State becoming a party to the treaty. . . .