From: Gora Runner
I read somewhere that the value of Z (0-768m). You mentioned that the value of Z is now 4096m maximum. I guess it is because the newer version of SL viewer. If my guess is right then
Which version of SL Viewer allowed Z (0-768m)? …….
Which version of SL Viewer allows Z (0- 4096m)?...........
.
Any SL client from client 1.20.15 to present is able to build up to 4096 meters height. Which means every version currently allowed to run on the grid. Prior to 1.20.15, the limit was 768 Meters. The change came in when the Havok 4 Physics engine was added.
From: Gora Runner
It seems that the newer version of SL viewer allows access to higher elevation. Is there any possibility that premium user or VIP users would get the privilege to use a classified version of SL viewer which will be different than contemporary public SL Viewer and would get them extra privacy and client satisfaction? Whether is it possible to disseminate user access based on SL viewer?
.
Not likely at all. The client is now open-source, which means that even if LL limited the normal client to 2048 Meters, and offered a special version to Premium members to access between 2048 and 4096, all the third-party clients would ignore it. And there are WAY too many current land owners who have land on Private sims, are NOT Premium, and have builds all the way to the max 4096 M height.
The limit is based on the physics engine's capabilities. It is not an arbitrary limit that LL can rearrange to suit preferential policies.
From: Gora Runner
I would also request you to check the following information:
1) Residents are not able to fly higher than 300m altitude. Is that correct?
.
No. Without a flight assist, the stable hover height limit is almost 150m above the ground (terrain mesh). With a free flight feather, or any other scripted flight assist attachment or vehicle, you can go to thousands of kilometers altitude. Though anything above 4096 Meters is rather pointless, since nothing exists up there.
From: Gora Runner
2) Is there any range for clouds? Minimum…..and Maximum ……..?
Roughly between 150 M and 250 M altitude.
From: Gora Runner
3) Anything higher than 300 m is not displayed on the map? Is that correct?
.
I think ot is 400 M up that things don't get mapped on the in-world map. Not certain.
From: Gora Runner
4) Is there any example of skybox in Linden own land or it is a phenomenon in case of private owned land?
.
There are no "Public skyboxes" on Linden-owned land, that I am aware of.
From: Gora Runner
5) Can a private parcel owner built skybox anytime or it needs permission from the estate owner?
.
On Mainland, yes, whenever and wherever the land owner wants, as long as it is over their parcel and does not overlap someone else's airspace.
On Private Island sims, it depends on the sim owner's covenant. Some don't care, some say it can't be visible from the ground, some says if it is visible from the ground, it needs to look like it belongs in the sky (Like making it look like e blimp, or a hot air balloon.) This is largely because Private sim owners often have zoning in place to improve the look of things, so the sky isn't full of random trash.
From: Gora Runner
6) Like the height of skybox has increased over time, the range of terraformation has changed also or it is static?
.
The range of terraforming actually decreased, for Mainland. On some of the older sims on the original Mainland, you had very wide terraform limits. As much as +/- 100 Meters. In the newest sims LL has put out as Mainland, they are typically limited to +/- 4 Meters.
On Private sims, the limit is +/- 100 Meters, unless the sim owner sets it to less.
A private sim owner can use a .raw file to get a range as wide as zero to 510 Meters for terrain height, but in practice almost nothing exists with terrain higher than 256 Meters, because it horribly smears the appearance of the terrain surface textures. Remember also, a sim is only 256 Meters on a side, so a 510 Meter peak on a 256 x 256 base looks pretty extreme.
From: Gora Runner
7) I knew that it is +/- 4m in most LL owned regions, +/- 40m in some older sims but the limit is +/- 100m for private islands. Please correct me if I am wrong?
.
You are correct, for Mainland. Though in some recent themed areas, terraforming is limited to zero. Nautilus City and Bay City, for example, allow no terraforming at all. Same goes for the City area of Zindra.
On private sims, it's +/- 100, unless changed by the sim owner.
From: Gora Runner

Is there any possibility that in future Linden Lab will sell extra prim with extra fees in addition to the usual fees? Can this strategy be lucrative enough for LL to generate extra revenue?
.
Nope. The prim limits are not a capricious whim. They are based on limits of what the simulators and asset servers can rationally and safely handle.
From: Gora Runner
9) Pros and Cons of vertical expansion of SL land?
.
Not going to happen, short of creating a whole new grid. Too much of the nuts and bolts of how SL works are hard-coded for no vertical partitioning, and for the height limits we have today. The expansion to Havok 4, allowing building to 4096 Meters, required rewriting over half of the LSL Programming language, to revise hard-coded 768 M limits. And they STILL haven't caught up with all the glitches in that regard!
From: Gora Runner
10) Pros and Cons of horizontal expansion of SL land?
.
Happening every week. LL regularly adds more sims of Mainland, weather we need the extra land or not, and new Private Island sims are purchased and put on-line every week.
From: Gora Runner
11) Currently land is provided by Linden Lab alone. In future is there any possibility that private servers can also host SL lands? Does Linden Lab have any long term view in this regard? If you mention it clearly.
Not likely in any way connected to the existing SL grid. Too many issues with licensing of content rights form one grid to another. The new SL Enterprise "Behind The Firewall" product will provide Corporations with their own, isolated 8-sim mini-grids. But no contact to the main grid. Various attempts to reverse-engineer the Server software and produce competing grids are still in the "stone knives and bearskins" era, with limited functionality, and very limited trust for security.