octet_string            T_OCTET_STRING
utf8_string             T_UTF8_STRING

rxvt_term *		T_TERM

overlay *		T_OVERLAY

Time			T_UV
Atom			T_UV
Window			T_UV

urxvt::pixbuf           T_PTROBJ
urxvt::img              T_PTROBJ

GError **		T_UV

INPUT

T_TERM
	$var = SvTERM ($arg);
T_OVERLAY
	$var = SvOVERLAY ($arg);

T_OCTET_STRING
        $var = SvPVbyte_nolen ($arg)

T_UTF8_STRING
        $var = SvPVutf8_nolen ($arg); // imperfect, destroys references

OUTPUT

T_TERM
	$arg = newSVterm ($var);