Ensuring that a font works for MathJax on untested machines
问题 In the stylesheet for my website I have .mi, .mo { font-family: 'Charter', 'MathJax_Math' !important; } Setting aside for the moment whether this will always produce satisfactory results for users when an ideal version of Charter is present (so far it does for me), is there a way to ensure that this will have the same effect on machines that I can't test it on. Clearly this fails gracefully for users that lack Charter entirely, but what I wonder is whether the there are Charters in wide use