Declares a local copy of perl's stack pointer for the XSUB, available via
the C<SP> macro. See C<SP>.
+=for apidoc ms||djSP
+
+Declare Just C<SP>. This is actually identical to C<dSP>, and declares
+a local copy of perl's stack pointer, available via the C<SP> macro.
+See C<SP>. (Available for backward source code compatibility with the
+old (Perl 5.005) thread model.)
+
=for apidoc Ams||dMARK
Declare a stack marker variable, C<mark>, for the XSUB. See C<MARK> and
C<dORIGMARK>.
=for apidoc Ams||SPAGAIN
Refetch the stack pointer. Used after a callback. See L<perlcall>.
-=cut
-*/
+=cut */
#define SP sp
#define MARK mark