A method for controlling a selective catalytic reduction catalyst in an exhaust line of an internal combustion engine is disclosed, wherein the supply of a quantity of a gaseous ammonia reductant to the SCR catalyst uses a closed-loop SCR catalyst model coupled to a SCR-out NOx sensor that measures a SCR-out NOx emission value. The header for each source column is evaluated heuristically to see if the header matches a predefined entity. The received first request set and second request set are aggregated into an aggregated request set pertaining to a first media source. The method also includes the step of locking a user interface of controls for the medication pump to place the medication pump under the exclusive control of medical professionals. The method also includes attaching a replacement display panel to the mechanical support structure at the location of the defective panel, and connecting power to the replacement display panel. The invention in one respect includes reading data from a multi-touch sensing device such as a multi-touch touch screen where the data pertains to touch input with respect to the multi-touch sensing device, and identifying at least one multi-touch gesture based on the data from the multi-touch sensing device and providing an appropriate multi-haptic response.