not a serious reply, but while we are listing out SVG alternatives, heres an obscure one named IDEAL[1] that came with System V UNIX. (linked: the manual in pos

not a serious reply, but while we are listing out SVG alternatives, heres an obscure one named IDEAL[1] that came with System V UNIX. (linked: the manual in postscript format) the basic vector primative in IDEAL is a complex number, for making rotations "easier". The language itself is one of the few examples of a fully constraints oriented language. functions rather than taking input parameters, simply have free variables. you can supply constants for any of them and the system will resolve when there is only one possible solution. the output of IDEAL is dvi which could be fed into TROFF to print. [1]: https://web.cecs.pdx.edu/~trent/gnu/groff/103.ps https://web.cecs.pdx.edu/~trent/gnu/groff/103.ps