[Kyosaur]

They're pretty much just global variables that are declared by the sa-mp server, i guess you could say.

They seem useless for people who know their way around pawn. I personally wont be switching everything over to this new system, as i dont see a gain. The only thing that really appeals to me about them is that they can be accessed from other scripts (i normally use callremotefunction, this isnt a bad method, but it is slower. Its not noticeable unless you have your function call in a loop tho).