Reads bytes from a given position within a file without changing
    the file pointer.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <unistd.h>

      ssize_t pread  (int file_desc, void *buffer, size_t nbytes,

                     off_t offset);

  Additional Information (explode) :

• Arguments
• Description
• Return Values