OUTPUT
GENO_EYE_LABEL_BIND_T
    if ($var|geno_eye::LABEL_BIND_TOP)
        sv_setpv($arg, "top");
    else if ($var|geno_eye::LABEL_BIND_BOTTOM)
        sv_setpv($arg, "bottom");
    
    if ($var|geno_eye::LABEL_BIND_LEFT)
        sv_catpv($arg, "left");
    else if ($var|geno_eye::LABEL_BIND_RIGHT)
        sv_catpv($arg, "right");