Hi, I am interested to know what does the iPhone SDK include. For example: Does it include: POSIX libraries? stdlib? C, C++ or Objective-C? File APIs? Networking APIs (e.g., TCP, UDP)? Messaging APIs (e.g., SMS)? 2D and 3D rendering? Is it preemptive or non-preemptive? Multitasking? and more and more.. :-> Any information, is much appreciated! Thanks.