The Deus philosophy recalls an era before the various pursuits of fun – motorcycling, surfing, skateboarding, whatever – were divided into fundamentalist factions. The reason why H+ is bracketed is because H+^3 is something completely different and they want to (unsuccessfully, it seems) point out the transhuman context. If you're asking as a new writer, I'd recommend avoiding the technique. Anyone can contribute to it, so discover, share and add your knowledge! Deus ex Machina (god from the machine) roared into Australia’s cultural consciousness in 2006, with some neatly customised motorcycles and a quaint notion that doing something is more fun than just owning something. H+ or h+ is the symbol for transhumanism (the idea of improving the human condition).
It is not inherently bad, although it is frequently used poorly. The "3" simply stands for Deus Ex 3. Deus ex machina is a literary technique where a conflict in the plot is solved in a sudden or unexpected way. Deus Ex Wiki is a community site dedicated to the Deus Ex series of video games.