+ " <within header=\"link\" rule=\"url\"/>\n"
+ " <within tag=\"body\" attr=\"background\" rule=\"null\"/>\n"
+ " <within tag=\"script\" attr=\"#text\" rule=\"url\"/>\n"
+ " <within tag=\"style\" attr=\"#text\" rule=\"url\"/>\n"
+ " <within attr=\"href,src\" rule=\"url\"/>\n"