Can HUDS only be used with mesh items?

[JingleWorm]

Are HUDS only used with mesh?

[Magnanimousity]

A HUD is a scripted object designed for a specific purpose. A HUD can be used with anything it's made for, whether it's prims, avatar animations, sounds, or mesh! However, they can't be used with anything they're not made for, so if you're trying to use a HUD that's made for... Let's say it's made for changing the texture of a clothing item, it's only going to work with that clothing item and only for changing the texture of that specific item.

[Chic Aeon]

Huds (head-up display) can change the texture or the tint of a prim for example. There were huds that changed textures before there were mesh. It's just now they are more prevelant. If you are changing texutre on a PRIM, then you need to specify the "face" of the prim you want to change OR you can change the whole prim.  

 

Animation huds have been around almost for-e-ver. So different types of hud for different processes.  Basicly a hud is just something that attaches to your screen (most often) with scripts that let's you change something.