In this Part—
“carrier bag” (“bag siopa”) has the meaning given by section 54;
“carrier bag regulations” (“rheoliadau bagiau siopa”) has the meaning given by section 55;
“the charge” (“y tâl”) has the meaning given by section 55;
“charitable purpose” (“diben elusennol”) is to be interpreted in accordance with section 57(8);
“gross proceeds of the charge” (“enillion gros o’r tâl”) means the amount received by a seller of goods by way of the charge;
“net proceeds of the charge” (“enillion net o’r tâl”) means a seller’s gross proceeds of the charge reduced by such amounts as may be specified;
“seller of goods” (“gwerthwr nwyddau”) is to be interpreted in accordance with section 56;
“specified” (“penodedig”) means specified in carrier bag regulations.