[albinahlback]

I think many of the ideas originates from the problem that many users of Latex does not know how to combine proper Latex formatting with stylistic code. The output should be nicely formatted, and given the code it should be very easy to see what it will produce.

As such, I do not like the second example with the code format int_5^20 4 x dx. The absence of backslash \ makes me think that "int" is a variable, "_5^20" is too tight for me, and dx also looks like a variable. Personally, I prefer typing \int_{5}^{20} 4 x \dd{x}, where \dd is your favorite differential typesetting (for me it is \mathop{}\!\mathrm{d}).

But I suppose it is only meant to be a substitute for MathJax and similar markup programs, and not actually Latex.