uaf遇到问题求教

zhaojieangelaUID: 2804980

When you have completed the online Application Form, you may print the application directly from the website or send to your mail box as a PDF file (this file must be printed). Your registration data is saved on the UAF database. After printing, you must sign the print-out to make it an official application. The signed print-out you should send to University Admissions with all the obligatory documents to create yourself an applicant file.
请问打印什么啊？在哪打印?刚注册完 My UAF

zhaojieangelaUID: 2804980

还有PS和motivation letter 有啥区别啊？写作格式什么的？谢谢，在线等~~