On that topic, \iff doesn't seem to work either...

should result in

$\iff$

I wonder, could we get

Mathjax instead?

It renders much nicer text, has a more complete syntax and to use it you just type $between dollar symbols$ or, for longer passages

$$

between double dollar symbols

like demonstrated here

$$

It's also what

StackExchange is using for those of their subsites that actually are likely to involve math (like math, physics, chemistry...).

It apparently would be as simple as calling the following script which I already use for some places to get access to MathJax without technically having it supported.

(It's basically the adress of a link in my favorites bar and when I click it, all between two $s will be treated like it should be LaTex - the format of it obviously sucks, because it's a one-liner as put into the adress bar)

javascript:(function(){if(window.MathJax===undefined){var%20script=document.createElement("script");script.type="text/javascript";script.src="https://d3eoax9i5htok0.cloudfront.net/mathjax/latest/MathJax.js?config=TeX-AMS_HTML";var%20config='MathJax.Hub.Config({"HTML-CSS":%20{%20preferredFont:%20"TeX",%20availableFonts:%20["STIX","TeX"],%20linebreaks:%20{%20automatic:true%20},%20EqnChunk:%20(MathJax.Hub.Browser.isMobile%20?%2010%20:%2050)%20},tex2jax:%20{%20inlineMath:%20[%20["$",%20"$"],%20["\\\\(","\\\\)"]%20],%20displayMath:%20[%20["$$","$$"],%20["\\[",%20"\\]"]%20],%20processEscapes:%20true,%20ignoreClass:%20"tex2jax_ignore|dno"%20},TeX:%20{%20extensions:%20["mhchem.js"],%20noUndefined:%20{%20attributes:%20{%20mathcolor:%20"red",%20mathbackground:%20"#FFEEEE",%20mathsize:%20"90%25"%20}%20}%20},messageStyle:%20"none"});%20%20%20%20%20%20%20%20%20%20%20%20'+'MathJax.Hub.Startup.onload();';if(window.opera){script.innerHTML=config}else{script.text=config}document.getElementsByTagName("head")[0].appendChild(script)}else{MathJax.Hub.Queue(["Typeset",MathJax.Hub])}$('html').ajaxComplete(function(){MathJax.Hub.Queue(["Typeset",MathJax.Hub])})})();

In case you're wondering: I'm using that in StackExchange chatrooms where MathJax doesn't automatically work, because of slowdowns. A chat has to be very responsive after all. That's also where I found the script in the first place.

EDIT: After clicking on said MathJax converter link, I see my post as follows (at least previously to this very edit)

--- BEGINNING OF SCREENSHOT ---

--- END OF SCREENSHOT ---

Note that the $\iff$ above is converted and also the example text below, which of corse is pretty useless, but an example none the less.