J.3.2 Environment
The mapping between physical source file multibyte characters and the source character set in translation phase 1 (5.1.1.2).
The name and type of the function called at program startup in a freestanding environment (5.1.2.1).
The effect of program termination in a freestanding environment (5.1.2.1).
An alternative manner in which the main function may be defined (5.1.2.2.1).
The values given to the strings pointed to by the argv argument to main (5.1.2.2.1).
What constitutes an interactive device (5.1.2.3).
The set of signals, their semantics, and their default handling (7.14).
Signal values other than SIGFPE, SIGILL, and SIGSEGV that correspond to a computational exception (7.14.1.1).
Signals for which the equivalent of signal(sig, SIG_IGN); is executed at program startup (7.14.1.1).
The set of environment names and the method for altering the environment list used by the getenv function (7.20.4.5).
The manner of execution of the string by the system function (7.20.4.6).