#include <process.h>
#include <string.h>

void app_main (void) {
  int e_pid = get_exec_pid ();
  int e_pgid = get_procgroup (e_pid);

  for (;;) {
    char ch;

    mail_receive (&ch, 1);
    test (ch);
    /* mail_send (e_pgid, &ch, 1); */
  }
}