A system and method of displaying multiple, concurrent instant messaging sessions is described. The transfer case side having a gear reduction set, and a shift sleeve for selecting between the high, or direct drive speed, and the low, or reduced gear speed. A second volume of the formation may be heated using a second set of heaters. A processor can be coupled to the image sensor to receive visible light data and infrared data. The link assembly couples the trigger mechanism and the bubble generating device in a manner in which actuation of the trigger mechanism causes the bubble generating device to move past the wiping bar and to contact the wiping bar, so as to create a film of bubble solution across the bubble generating device. The unsaturated polyester polyols produced have a reduced degree of unsaturation and are useful in the synthesis of polymeric polyols with good viscosity, filterability and particle size properties, suitable for the production of cellular polyurethane compounds.