Assigning buffers?

Hi,
could anyone provide me the relationships between the buffer stuff?
I mean what's the relationship between

#property indicator_buffers, an array + the function "SetIndexBuffer()".
I'm trying to figure it out for almost 3h now, but i just don't get it, also i read through trader guru's manual the fourth time..
I hope someone could clear things up in an understandable manner.
Thank you very much.
Greets
-mike

Hello, I am too dont have find the reason for SetIndexBuffer() function and dont use it like other functions there, because it work also without them.