Letter of 9 december 1999 to the chief executive tendering advice on the proposed introduction of a supplementary travel allowance to replace the existing provision of home - office travelling expenses and home - office mileage allowance 薪常会于一九九九年十二月九日呈交行政长官就设立补助交通津贴以取代现行往返住所及办事处的交通费补贴和往返住所及办事处的行车津贴的建议提供意见的函件