AS I remember it's just standard format, state what is you job title, how much payment, company can fire you and you can leave anytime. If you have relocation or sign on benefit, then there will be service time limitation. Normally, if you leave your job in a year, you need payback relocation fee. You accept the offer. For other stuff is company police.

Just check what's on the paper, if you have question, you can always call HR to clarify.

Good luck and Congrats!