From publisher blurb: Advantage and Disadvantage for the 2d6 science fiction system reference document (2e 2d6 SF SRD) is a second edition update for the Universal Machine core mechanic. This simple, one column, one page document comes in Word, Open and Rich Text file formats. A bonus formatted PDF gives you the Advantage and Disadvantage rules in the classic science fiction roleplaying game font and layout, giving a true Old School roleplaying look. Universal Machine products integrate with other 2d6-based science fiction RPG systems, including the original 2d6 science fiction RPG modules and supplements. Universal Machine products can also be used seamlessly with Cepheus Engine materials.