+# ifndef PERL_IMPLICIT_CONTEXT
+# define PERL_IMPLICIT_CONTEXT
+# endif
+# ifndef PERL_IMPLICIT_SYS
+/*# define PERL_IMPLICIT_SYS*/ /* XXX not done yet */
+# endif
+#endif
+
+/* XXXXXX testing multiplicity via implicit pointer */
+#if defined(MULTIPLICITY)
+# ifndef PERL_IMPLICIT_CONTEXT
+# define PERL_IMPLICIT_CONTEXT
+# endif
+# ifndef PERL_IMPLICIT_SYS
+/*# define PERL_IMPLICIT_SYS*/ /* XXX not done yet */
+# endif
+#endif
+
+#ifdef PERL_CAPI
+# undef PERL_OBJECT
+# ifndef PERL_IMPLICIT_CONTEXT
+# define PERL_IMPLICIT_CONTEXT
+# endif
+# ifndef PERL_IMPLICIT_SYS
+# define PERL_IMPLICIT_SYS
+# endif
+#endif
+
+#ifdef PERL_OBJECT
+# ifndef PERL_IMPLICIT_CONTEXT
+# define PERL_IMPLICIT_CONTEXT
+# endif
+# ifndef PERL_IMPLICIT_SYS
+# define PERL_IMPLICIT_SYS
+# endif