(Copy and paste the following lines to see what symbols they produce)
You can use the following ASCIIMathML constructs:
`(x+1)/(x-1) x^(i+j) x_(ij) sqrt(x) root(n)(x) stackrel(+)(->) text(any) "any"`
Operation symbols `+ - * ** // \\ xx -: @ o+ ox sum prod ^^ ^^^ vv vvv nn nnn uu uuu`
Relation symbols `= != < <= > >= -< >- in !in sub sup sube supe -= ~= ~~ prop`
Logical symbols `\and \or \not => if iff AA EE _|_ TT |-- |==`
Miscellaneous symbols `int oint del grad +- O/ oo aleph ... cdots \ quad qquad diamond square |__ __| |~ ~| CC NN QQ RR ZZ`

Standard functions `sin cos tan csc sec cot sinh cosh tanh log ln det dim lim mod gcd lcm`
Grouping brackets `( ) [ ] { } (: :) {: :}`
Arrows `uarr darr rarr -> larr harr rArr lArr hArr`

Accents `hatx barx ulx vecx dotx ddotx`
Font commands `bbA bbbA ccA ttA frA sfA`
Matrices `[[a,b],[c,d]] ((1,0),(0,1))`
Greek letters `alpha beta chi delta Delta epsi eta gamma Gamma iota kappa lambda Lambda mu nu omega Omega phi Phi pi Pi psi rho sigma Sigma tau theta Theta upsilon xi Xi zeta`