Most functional base items require both energy and control. Base Energy Items provide energy, while Control Items consume energy and create control. As with energy items, control items come in both arcane and tech styles which are functionally identical. These items may have different footprints and crafting items, however, which are detailed on the item's page. Auxiliary items must be paired with a main item of the same style. Control itself is not typed across the base - for example, control generated from a Mainframe can be used to run an arcane teleporter.