The command instructions say
/particle <name> <x> <y> <z> <xd> <yd> <zd> <speed> [count] [mode]
but how do I use those? I understand the
<z>, but first of all, what are
<zd>? Also, what does the speed do, and how much does any given number change it? What do count and mode do?
I basically just want to know what all the positional and optional arguments in the
/particle command do, and how I can effectively use them.