It might work in browsers but a lot of SVG tooling will ignore DTD because it’s a DOS risk. E.g. Billion laughs attack https://en.wikipedia.org/wiki/Billion_la

It might work in browsers but a lot of SVG tooling will ignore DTD because it’s a DOS risk. E.g. Billion laughs attack https://en.wikipedia.org/wiki/Billion_laughs_attack https://en.wikipedia.org/wiki/Billion_laughs_attack