In this Part—
“the principal election” means the election under regulation C4(2);
“the past period” means the period specified under regulation C4(7)(a);
“the contribution period” means the period specified under regulation C4(7)(c).
Any reference in this Part, in relation to a person who has spent any part of the contribution period in part-time employment, to a period which a person is entitled to count as reckonable service arising from the contribution period is a reference to a period calculated by applying the formula in regulation D1(2) to the contribution period.
During any period for which a person is paying additional contributions for a current period under regulation C9 or C10, for the purposes of this Part—
he is to be treated as being in full-time pensionable employment, and
his contributable salary is the notional salary described in regulation C9(7)(a) or, as the case may be, regulation C10(4).