Plug-ins are simply programs attached to the mind-state emulation software, so that the ego may access them immediately. A plug-in requires a Complex Action to install; once installed, it is “carried” by the infomorph, so that if the infomorph moves to another device, the plug-in moves with it. Plug-ins may be deleted with a Quick Action. Almost any software can be installed as a plug-in, including standard programs, scorchers, and skillsofts (the latter require virtual skillware to run). Other active infomorphs (including AIs and muses) cannot be attached as plug-ins, as they require their own mind-emulation suite. An inactive infomorph, however, could be attached, just like any other electronic data.