admin vs limited

None of the apps listed here require admin rights as most computers out in the wild won't give them to you (net cafe, library, hotel business center, work PC at most companies, PCs at school/university, etc). Most PCs you encounter that aren't owned by you (or a person you're visiting) are using a limited login or guest login level account.

Any app that requires admin rights will be specifically branded as such as it's only partially portable.

I think what your asking, if I understand right, is user rights.

Most programs don't have rights them selfs, but go by the rights the user has. If you have admin rights, then you have access to most of the OS and so will the program. If you have restricted rights such as guest, then so will the program. Where most have problems is trying to do or access something outside of there user rights.

For the paf.. basically its just a easy way to package the app for users to install it.