The invention relates to a rail of a flexible drive, which rail is intended to guide a drawing means. The gel image is for showing the sample components in a band form along the flow route, and the display device may also be adapted to display an electropherogram, showing absorptivity of light by or intensity of emitted light from the separated sample components along the flow route based also on the detection signals. When a piece reaches a location where it can tip upon one of the flights and the end of the piece no longer contacts a part of the adjoining flight, the piece will tip. The invention also discloses a method for increasing retention and drainage in a papermaking process comprising the steps of: adding both an effective amount of starch and an effective amount of SMS to a slurry of said papermaking process, wherein said starch is selected from the group consisting of: tapioca starch; potato starch; corn starch; waxy maize starch; rice starch; and wheat starch. The cushion-releasing mechanism preferably comprises at least one slot in the seat section, wherein the slot is defined by the seat section and extends through the seat section and at least one tongue, wherein the tongue protrudes from the cushion and extends through the slot. The fractional integration counter alters the integrated current of the charge pump based upon a user-defined input, thereby permitting increased signal-to-noise ratio at the output of the charge pump.