+
+/*
+=for apidoc Am|void|XST_mIV|int pos|IV iv
+Place an integer into the specified position C<pos> on the stack. The
+value is stored in a new mortal SV.
+
+=for apidoc Am|void|XST_mNV|int pos|NV nv
+Place a double into the specified position C<pos> on the stack. The value
+is stored in a new mortal SV.
+
+=for apidoc Am|void|XST_mPV|int pos|char* str
+Place a copy of a string into the specified position C<pos> on the stack.
+The value is stored in a new mortal SV.
+
+=for apidoc Am|void|XST_mNO|int pos
+Place C<&PL_sv_no> into the specified position C<pos> on the
+stack.
+
+=for apidoc Am|void|XST_mYES|int pos
+Place C<&PL_sv_yes> into the specified position C<pos> on the
+stack.
+
+=for apidoc Am|void|XST_mUNDEF|int pos
+Place C<&PL_sv_undef> into the specified position C<pos> on the
+stack.
+
+=for apidoc Am|void|XSRETURN|int nitems
+Return from XSUB, indicating number of items on the stack. This is usually
+handled by C<xsubpp>.
+
+=for apidoc Am|void|XSRETURN_IV|IV iv
+Return an integer from an XSUB immediately. Uses C<XST_mIV>.
+
+=for apidoc Am|void|XSRETURN_NV|NV nv
+Return an double from an XSUB immediately. Uses C<XST_mNV>.
+
+=for apidoc Am|void|XSRETURN_PV|char* str
+Return a copy of a string from an XSUB immediately. Uses C<XST_mPV>.
+
+=for apidoc Ams||XSRETURN_NO
+Return C<&PL_sv_no> from an XSUB immediately. Uses C<XST_mNO>.
+
+=for apidoc Ams||XSRETURN_YES
+Return C<&PL_sv_yes> from an XSUB immediately. Uses C<XST_mYES>.
+
+=for apidoc Ams||XSRETURN_UNDEF
+Return C<&PL_sv_undef> from an XSUB immediately. Uses C<XST_mUNDEF>.
+
+=for apidoc Ams||XSRETURN_EMPTY
+Return an empty list from an XSUB immediately.
+
+=for apidoc AmU||newXSproto
+Used by C<xsubpp> to hook up XSUBs as Perl subs. Adds Perl prototypes to
+the subs.
+
+=for apidoc AmU||XS_VERSION
+The version identifier for an XS module. This is usually
+handled automatically by C<ExtUtils::MakeMaker>. See C<XS_VERSION_BOOTCHECK>.
+
+=for apidoc Ams||XS_VERSION_BOOTCHECK
+Macro to verify that a PM module's $VERSION variable matches the XS
+module's C<XS_VERSION> variable. This is usually handled automatically by
+C<xsubpp>. See L<perlxs/"The VERSIONCHECK: Keyword">.
+
+=cut
+*/
+