In this Part—
“central system” and “designated central system” have the meaning given by section 184;
“code manager”, in relation to a designated document, has the meaning given by section 183(1);
“code manager licence” has the meaning given by section 183(2);
“designated document” has the meaning given by section 182(1);
“the Independent System Operator and Planner” means the person for the time being designated under section 162(1);
“relevant licence” means a licence for the purposes of section 4 of the Electricity Act 1989 or section 5 of the Gas Act 1986 (prohibitions on unlicensed activities);
“responsible body”, in relation to a designated central system, has the meaning given by section 184(4).