My personal favorite math-input-system is Mathematica, which has sane keyboard shortcuts and WYSIWYG typesetting. https://reference.wolfram.com/language/ref/me

My personal favorite math-input-system is Mathematica, which has sane keyboard shortcuts and WYSIWYG typesetting. https://reference.wolfram.com/language/ref/menuitem/Typesetting.html https://reference.wolfram.com/language/ref/menuitem/Typesett... https://reference.wolfram.com/language/guide/SpecialCharacters.html https://reference.wolfram.com/language/guide/SpecialCharacte...