这个只有在火狐下正常显示，在其它浏览器下可能会出现意想不到的问题。
For example `int_-1^1 sqrt(1-x^2)dx = pi/2`,
`((a,b),(c,d))^-1 = 1/(ad-bc)((d,-b),(-c,a))`
and `\sinh x=\frac{e^x-e^{-x}}{2}`.
amath
Or try ASCIIMath without delimiters: like x^2 or sin x
It can be quite convenient...
endamath
followed by a more elaborate graph (try double-clicking it, also
while holding down shift or alt)
agraph
width=300; height=200; xmin=-5; xmax=5; xscl=1;
plot((x-2)*(x-1)*x*(x+1)*(x+2)/2,-2.5,2.5);
endagraph