There is no syntax highlighting on the blackboard. Math notation is not designed. It has haphazardly evolved over centuries. It is not rigorous even though mat

There is no syntax highlighting on the blackboard. Math notation is not designed. It has haphazardly evolved over centuries. It is not rigorous even though math itself is (attempts to be) rigorous, it is a language as imperfect as its users. But it does its job well enough.