When you have an object made of multiple linked prims and you need to dynamically alter the particle effects on multiple child prims, it is currently necessary to have a script in each prim whose particle effects need to change. This can be very wasteful if that is the only thing the prim needs a script for. I suggest adding a new LSL function. llLinkParticleSystem(integer link, list rules) Much like llSetLinkTexture(), this function would allow a single script in one prim to alter the particle system properties of other prims in the same link set. With this funciton, a birthday cake with ten candles would only need one script instead of eleven and would avoid the need for link_message traffic to handle dynamic changes to particle effects.