why Container or layer

[metalchips2]

can someone give me more info why you would use a container or layer. example also
Thanks for any info

[metalchips2]

maybe i can explain better....info for container vs layer

[metalchips2]

  WELL I HAVE TO ANSWER THIS MYSELF, I FIQURE THE CONTAINER WILL KEEP ALL YOUR "EXAMPLE"
TACHOMETER TOGETHER AND SO ON

[Weston@PPE]

A container and a layer behave the same, and the use of them is completely conventional (You do always need at least one layer). Usually the layers are used to control render speed, and the containers are used to group objects that are used in the same gauge. So there might be a Foreground and a Background layer, each with a container labeled Speedometer. The background layer would have the gauge backgrounds and text (like the units), and the foreground layer would have all of the needle items.