A method for generating ATM cells for low bit rate applications, said method including a step of scheduling ATM cell transmission times in a way as to keep ATM cell spacing as constant as possible, and a step of multiplexing a plurality of low bit rate connections into a same ATM connection having the thus scheduled ATM cell transmission times. At that time he refers to the information concerning the combinations of the merchandise he desires and the merchandise combinations. , involved in the fluctuations of a glass composition and the variation of quality such as the occurrence of striae can be suppressed. The apparatus includes a seating surface resiliently mounted to provide partial body weight support to the person.