User privilege levels

WebFfit has two type of users: Normal Users (NUsers) and Privileged Users (PUsers).

• Normal Users are restricted only by the fact that they can not write free C code. The fitting function is restricted to a single line of C code (including calls to math functions and to other math functions provided by WebFfit.
• Privileged Users can write their own functions with almost complete freedom.

The change of privileges is performed by the system manager when required by the users.