An oxide or nitride layer is provided on an amorphous semiconductor layer prior to performing metal-induced crystallization of the semiconductor layer. A main unit is adapted for mounting to a column support, the main unit being adapted for mounting said components by way of a connection arrangement enabling relative displacement and relative angular setting of the components relative to the base unit. This service position can be employed to provide a safe environment for diagnostic testing and repair of the unit. The technique can also include receiving a selection of the particular UI string, and outputting metadata associated with the particular UI string, the metadata representing context information for assisting a human translator.