@c ----------------------------------------------------------------------
@node fork, unix
@subheading Syntax

@example
#include <unistd.h>

pid_t fork(void);
@end example

@subheading Description

This function always returns -1 and sets @code{errno} to ENOMEM, as
MS-DOS does not support multiple processes.  It exists only to assist
in porting Unix programs.


@subheading Portability

@portability !ansi, posix