I love stuff like this. You’ve basically made the world a better place. Btw didn’t notice if it can render them horizontally as well as per tradition?

Thanks! Only vertical staves at the moment, but maybe that's an idea for a future addition.

I don't know why the Cistercian did 6 like they did, because it look like not very good to me. So, I made up a new one.

I also made up my own way of representing numbers higher than 9999.

Here is my own program to draw these modified Cistercian numbers: http://sprunge.us/9R3zRA

Not sure if I'll ever need this but this is really cool and led me to learn about Cistercian numerals

Nice work! Generating SVGs with code is fun stuff.