Looking at the source it seems like the rehype-katex(https://www.npmjs.com/package/rehype-katex) package is used in dendron and that supports passing options to katex which in turn has the "globalGroup"(https://katex.org/docs/options.html) option which would enable macros(Like the ones defined here -> https://katex.org/docs/supported.html#macros) to persist between the commands which would be great. It would be great if you could expose this as an option.