Commmander L-XL , representing the mid and high-class range, also offers sufficien space for armrest casings which can be fitted with up to three controlling equipment of th customers choice. Screen holders can be attached at the front face of the armrest as well.ass-range of the new Cleemann operator seat. This seat is capable to include up to 3 control units. Furthermore a screen holder can be attached at the front face of each armrest.