MediocreTalent Starship

Thanks for the reply, but I was afraid that i worded the question wrong...I know what a demo is, in terms of what it's purpose is, what I was interested in finding out if it is, say on a skin, a tattoo layer that is seperate from the item or is the Demo item just textured differently from the first. Like with skins for example - it will usually say DEMO across the skin - is that and added tattoo layer or did the creator make a copy version of the original with those words on it? Or hair sometimes has the box or the big demo sign, but sometimes certain strands of the hair are colored or textured differently. Is that a tattoo? or a prim? or is it a seperate version of the product itself?

Can anyone briefly explain what a "demo version" is? Meaning, is it the regular version of an object with an added tattoo layer, or is it an entirely seperate thing? How are they created, and is it different for Mesh VS prim? Are demo versions created by the designers or builders in the programs they create the products, or is it something that can be bought and added to products? Any help would be appreciated. Thanks.