“On the other hand, it is possible to vary the grounds of an application already made, even by introducing something completely new. A student application can be varied so as to include marriage grounds. If an application is varied before a decision is made, the applicant will be required to complete the necessary prescribed form to vary his application. If an application is varied post decision, it would be open to the applicant to submit further grounds to be considered at appeal …Once an application has been decided it ceases to be an application and there is no longer any application to vary under section 3C(5). So any new information will fall to be dealt with during the course of the appeal rather than as a variation of the original application.” (para 3.2 emphasis added) 43 The same approach is supported by the current edition of Macdonald's Immigration Law & Practice 8th ed (2010) para 19.22 (under the heading “The tribunal as primary decision maker”). The only implicit criticism made of the majority approach in AS is that it did not go far enough. They observe that even without a section 120 notice the tribunal should be free to consider any matter – “… including a matter arising after the decision which is relevant to the substance of the decision regardless of whether a one-stop notice has been served. The ‘substance of the decision’ is not the decision maker's reasoned response to the particular application or factual situation that was before it but is one of the immigration decisions enumerated in section 82 and a ‘matter’ includes anything capable of supporting a fresh application to the decision maker…”