What is a Slide Control System on a gas fire?

This innovative Slide system has a subtly designed, ergonomic control that is situated to the top right hand side of the fire’s frame for easy access. This easy reach lever offers complete and convenient control over the fire. Ignite or extinguish the fire as well as adjust flame height and corresponding heat levels to achieve the warmth and ambience you desire. Slide control fires are also available with a specific selection of frame styling options.