PERLVAR(Iorigfilename, char *)
PERLVAR(Idiehook, SV *)
PERLVAR(Iwarnhook, SV *)
-PERLVAR(Iparsehook, SV *)
PERLVAR(Icddir, char *) /* switches */
PERLVAR(Iminus_c, bool)
PERLVARA(Ipatchlevel,10,char)
/* shortcuts to various I/O objects */
PERLVAR(Istdingv, GV *)
+PERLVAR(Istderrgv, GV *)
PERLVAR(Idefgv, GV *)
PERLVAR(Iargvgv, GV *)
PERLVAR(Iargvoutgv, GV *)