a description of the functioning of the gas system at national level, including infrastructure (to the extent not covered by point 1.1(b));
tuairisc ar fheidhmiú an chórais gás ar an leibhéal náisiúnta, lena n-áirítear bonneagair (sa mhéid is nach bhfuil seo cumhdaithe faoi phointe 1.1.(b));