First (real time) multi-boxing, questions about playing three Hunters.

[AirStarcraft]

Example.
/castsequence reset=0.3 0,0,0,0,Lava Burst
/castsequence reset=0.3 0,0,0,Lava Burst
/castsequence reset=0.3 0,0,Lava Burst
/castsequence reset=0.3 0,Elemental Blast
/castsequence reset=5 Lightning Bolt,Lightning Bolt,Lightning Bolt,Lightning Bolt,Lightning Bolt,Lightning Bolt,Lightning Bolt
/targetenemy [noharm][dead]

So, you literally press one button and it does all that? What? lol

What are with the numbers after reset? What is that specific to?