1. Each monthly pension payment constitutes a tacit acknowledgement of the Fund's obligation to pay according to its Rules, continuously interrupting prescription under section 14(1) of the Prescription Act. A partial acknowledgement of a debt interrupts prescription for the whole debt. 2. Under section 30I(2) of the Pension Funds Act, a creditor's awareness for time-bar purposes does not begin until he has full knowledge of his rights or can by reasonable care acquire such knowledge. A pension fund beneficiary is not required to query the determination of benefits or seek expert advice unless there is information suggesting a mistake might have been made. 3. Section 30P of the Pension Funds Act does not expressly or by necessary implication exclude the jurisdiction of the High Court to adjudicate matters not the subject of a complaint to the Adjudicator. Section 30H(2) affords priority to courts where proceedings are instituted before a complaint is lodged with the Adjudicator. 4. On interpretation of pension fund rules constituting a contract between the fund and members, where rules are clear and admit of no ambiguity, they must be given effect according to their tenor. 5. Under Rules 21 and 16 of the Fund, the compensation for total incapacity is achieved by extending the length of pensionable service as a multiplier factor in the calculation, not by increasing the percentage applied based on a deemed retirement age. 6. The expression 'exact age at retirement' in Rule 16 in its plain meaning refers to the age of the member at the date of his actual retirement, not to an age at a deemed date of retirement. Members who retire at age 60 or under are regarded as possessing the same life expectancy for calculation purposes. 7. 'Bonus service' and 'contributory service' are separate independent elements of 'pensionable service' under the Rules. There is no deemed extension of the duration of contributory service in Rule 15, and amounts paid by the employer under Rule 15(4) for bonus service do not constitute contributory service. 8. 'Final average emoluments' is calculated based on the last year of a member's actual contributory service, not hypothetical future service to normal retirement age. Ad hoc recalculation of pensions based on future salary increases would undermine certainty and predictability of a defined-benefit pension plan.