In recent snapshots, Minecraft added void and cave air, cave air being regular air. I think there should be more differences in void air, like there being no fall speed limit and things like that. What do y'all have to say bout this?
It sounds like confusion as to what those two actually *are* in what they do. I've created structures using "void air". I made a rail system in the Nether where as you rode a minecart, it would create the tunnel in the direction you were going. The problem was having this work diagonally, since structures ONLY deal with regular rectangles. To make it work, inside the tunnel I had "regular air". OUTSIDE the tunnel I used "void air". As you ride the tunnel, it would trigger the placement of the next segment. Regular air simply placed "air" so you could breath in the tunnel and actually move. But "void air" was *replaced* by whatever happened to be there... lava, netherrack, soulsand, whatever was there was already left alone rather than replaced by "air".
It's possible "Structure Void" isn't the same as "Void Air", or maybe "Structure Void" is now "Cave air" and "Void Air" is explicit ONLY to "below level 0, above 255, or chunks not yet generated." If that's the case, the Wiki could do with some clarification. I asked for such clarification onhttps://minecraft.gamepedia.com/Talk:Air#Cave.2F_Void_air_need_further_clarification
Thank you for your response on the Wiki talk page. It will be more useful when we can use them to some effect, likely in structures. Or... something. I'll remain satisfied it's clear to someone even if the difference remains clear as mud to me. ;-)