Abstract: A computer system displays a first object that includes at least a first portion of the first object and a second portion of the first object and detects a first gaze input that meets first criteria, wherein the first criteria require that the first gaze input is directed to the first portion of the first object in order for the first criteria to be met. In response, the computer system displays a first control element that corresponds to a first operation associated with the first object, wherein the first control element was not displayed prior to detecting that the first gaze input met the first criteria, and detects a first user input directed to the first control element. In response to detecting the first user input directed to the first control element, the computer system performs the first operation with respect to the first object.

Abstract: A chemical distribution system for a floor cleaning machine is described. The system utilizes at least one container that is selectively connected to a pump that pumps a cleaning chemical solution from the container into a tee for combining with a fluid from an onboard fluid tank at a rate determined by a machine operator. Chemical containers may be readily and interchangeably connected to the pump to permit various solutions to be selectively utilized to optimize floor cleaning.