[llull]

Very neat. One problem is immediate: when I handwrite an "x" for maths, it is as two 'c's touching back-to-back, so as not to confuse with some multiplication/cross-product symbol; such input proves very confusing to this code.

[unfamiliar]

> so as not to confuse with some multiplication/cross-product symbol

There really isn't much need for the multiplication symbol when we have side-by-side multiplication notation, and if x is a vector then you can underline it to distinguish it from the cross product (or just not name your vectors x). The "two c's" x has always looked bad to me and ends up getting confused with α and other things.

[microcolonel]

Odd, I've done the same thing now and it has worked flawlessly. Maybe it is learning from the "Perfect / Poor" votes.

[llull]

I just retried, and it does now gets it right for me too. Wow.

[warfangle]

I usually use an italicized x for math variables, a dot for multiplication when not implicit in the formatting of the expression, and an uppercase X for cross product.