F1 EAD International Organization

[hackers3]

Hello,

I am a F1 Student and got internship in International Organization. My EAD was also processed and currently I am working with them. I would appreciate if you could please tell me my legal obligations with respect to work hours weekly for International Organization.
This link says it can be full time / part time what does that mean

http://www.ice.gov/sevis/f_1_employment.htm#_Toc102538557

Also USCIS doesnt give any limits

http://www.uscis.gov/ilink/docView/SLB/HTML/SLB/0-0-0-1/0-0-0-11261/0-0-0-17197/0-0-0-17636.html

Appreciate your help !!